Malicious PDF — malware analysis report

Static analysis result for SHA-256 9814a75bf33040da…

MALICIOUS

PDF

59.4 KB Created: 2020-08-10 12:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d2c96a9a3e70d64f5f400d1af3d7048 SHA-1: 06ea7cdd20dc8f075cb3f16077b020529b7231dd SHA-256: 9814a75bf33040da037d5c57a3521540560bf55326311281724485959bac90db
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains, suggesting a link farm or redirection strategy. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains text related to academic notes and the URL for the redirector, indicating a lure to disguise malicious activity. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=b.+sc+part+1+chemistry+notes+pdf In PDF document text
    • http://nataxu.lizadimbleby.com/uploads/1/3/1/1/131164250/lebovivud_dopeg_tawulufegifimo.pdfIn PDF document text
    • http://pokuku.ccsflippinvintage.com/uploads/1/3/1/3/131381464/tokinaxovozawuj.pdfIn PDF document text
    • http://files.morjimcocopalms.com/uploads/1/3/1/3/131384789/2a0aea98a146c0c.pdfIn PDF document text
    • http://files.jamesarmstrongdesign.com/uploads/1/3/0/8/130873822/255634.pdfIn PDF document text
    • http://files.serenaremy.com/uploads/1/3/0/8/130814676/7892436.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4196/7528/files/zexokiruvixew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1756/6368/files/phytophthora_nicotianae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9709/5333/files/etabs_api_documentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8132/5987/files/xodixukijoxolafalewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/nivetojanafabajukonapujux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/bidoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/56956320910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/1886350265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/periodic_table_of_elements_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/gidupitibudafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/nesakapokowu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 5388 bytes
SHA-256: a916dec68a337aa4caa2ef74618894aff1025e87f714826eeaa0420a4d3f4e8f
font_01_sfnt_off000080df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DF 3204 bytes
SHA-256: 35c0a746fcdf55e64f2ba55209f6a139fa5d4ea47dce36c63c78d1e6d66b29b6
font_02_sfnt_off00008dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD0 2576 bytes
SHA-256: 7c39ce28624f4542f75b1ffc8145173145833d4531dc284b7a223e4ff974262f
font_03_sfnt_off000098c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C6 10252 bytes
SHA-256: f9d08080e291800fa95750915ab6bfd34d8755f25ea6cdb4565fac05940e9194
font_04_sfnt_off0000bbc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC8 16224 bytes
SHA-256: 207faf14306426b668b87aba0c9d447b8ba40b67f0f7b18660ffa0d3c8132265
font_05_sfnt_off0000d114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD114 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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