Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa6f8abfa5f5ad9…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 08:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 040832b3f74e54f33b0a1be9c0e966a7 SHA-1: f320e52c14ffa77c460f5d87b3dddf8509cd756c SHA-256: 7aa6f8abfa5f5ad9b433f7e029cb7b06771410067c626b7d8e9dfc072963b3d3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results for malicious purposes. The ML classifier also strongly indicates maliciousness. No scripts were extracted, but the primary attack vector appears to be the redirection to malicious infrastructure.

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=two+voices+one+song In PDF document text
    • http://files.the-college-closet.com/uploads/1/3/1/4/131407364/disudeluvaf.pdfIn PDF document text
    • http://files.indianheadsheepandgoat.org/uploads/1/3/0/9/130969798/2039405.pdfIn PDF document text
    • http://files.koahspearguns.com/uploads/1/3/0/9/130969645/6292534.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/1/0433/9246/7109/files/50527775008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0711/4391/files/72636017670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/menejomepavafixajin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/faxiwupokizibunuboxegag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7518/2485/files/bijavakulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3350/8512/files/xovalemubuwagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/more_player_models_1._8._9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8661/files/46198328862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/48270803242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/saditemebusapaminumopovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/80195648579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/creating_a_discord_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6952/1568/files/75884110064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/tawanefunuwek.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7266 4728 bytes
SHA-256: 70c7d9a7e09586966b2d86ff09a34faf2ffbc3824036ea6c242fc64f8a0c0df5
font_01_sfnt_off000082b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B0 13508 bytes
SHA-256: ee5a6ef914594f5b0f227c4d3e0545d45e3e2842e8e66aa27a3d61438a02a376

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