Malicious PDF — malware analysis report

Static analysis result for SHA-256 8848993a896a57b2…

MALICIOUS

PDF

59.0 KB Created: 2020-08-08 19:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7ad0fce2eaf695e8a610106321a361e SHA-1: 242611b5ed286501f701598426299211c12b59d0 SHA-256: 8848993a896a57b206cfee0ef8c0d939b5c4ccc59dd58e5e5d8acb47a168331b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains text related to 'genetically modified organisms gmos pdf' and a URL that appears to be part of a link farm designed to attract traffic. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=genetically+modified+organisms+gmos+pdf In PDF document text
    • http://suguvow.northcountryangler.com/uploads/1/3/1/1/131164239/6955637fe.pdfIn PDF document text
    • http://files.deerlakesbands.org/uploads/1/3/1/3/131379692/jitetexo.pdfIn PDF document text
    • http://files.garryportugal.com/uploads/1/3/1/0/131071067/tifajagemil_mejiveb_vagal_xomuxur.pdfIn PDF document text
    • http://files.smilecommunicationsgroup.com/uploads/1/3/2/6/132681002/vebevemiru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/lisujelulaxil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/razer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/shal_dorei_silk_farming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/52136586250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/tekapinetulajuzebepebumel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/venetinato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/13373716764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/11089887824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7941/6473/files/max_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/bajana_patalu_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/sowok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6231/2611/files/ponukeregutex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/banking_syllabus_2020_download.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B33 5396 bytes
SHA-256: 459ffc276b11f1756f7b5db18586c57b24659eb1d42bf501ca7860e73d230f29
font_01_sfnt_off00008d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7D 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000960a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960A 11184 bytes
SHA-256: f5738cedbfebe60c9a7f7766570cba341af9d2d39b744b815d080f3d6a393f5e
font_03_sfnt_off0000bb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB29 16068 bytes
SHA-256: 3b1167557c0500c78008053c404847a906c4d495ef15adec583fc97e76626070
font_04_sfnt_off0000cfcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCB 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71