Malicious PDF — malware analysis report

Static analysis result for SHA-256 440667b06a2ea0e0…

MALICIOUS

PDF

97.8 KB Created: 2020-08-25 12:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf94a4664143c6e2564eb77ff82584b7 SHA-1: 7d0e04ca1e8b5af63e933433459603daf88046b2 SHA-256: 440667b06a2ea0e0c4f38364f4627d0d4917f163f4195459d2aa67bfda12e9d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a document title. The link leads to `https://ttraff.ru/pify?keyword=neoliberalismo+en+america+latina+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. 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=neoliberalismo+en+america+latina+pdf In PDF document text
    • http://files.eseofmi.com/uploads/1/3/0/8/130813866/a53dc4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/rowakujizigoforimuxabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/defepoberotoluvonij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/nukiwivexifenun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7750/7999/files/10962430631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/40123039234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/vegagaxabaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/python_reverse_shell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/72447858433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0904/7708/files/graves_preseason_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72593533024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4678/0579/files/spanish_words_with_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/utorrent_pro_apk_cracked_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000128f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F4 5412 bytes
SHA-256: 6a025670df34f04cbab710e9192b1d24a23907fb8925d0f5aefb8642520d47d0
font_01_sfnt_off00013b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3C 12332 bytes
SHA-256: 48cbfeb98bc6241e53f7e6c22ca03f065daefcad557eaf001e0e554f1b006c36
font_02_sfnt_off00016330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16330 16076 bytes
SHA-256: e1ecdaf5f931254822c08e14176e742ed940844fb6ecb9fcb1e73603f1784b15

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