Malicious PDF — malware analysis report

Static analysis result for SHA-256 a707afb07347da52…

MALICIOUS

PDF

55.5 KB Created: 2020-07-30 12:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2737499687f661dcd41d22b2e9735046 SHA-1: f336262065ba2b34ded94780d38275ddf9d58f4d SHA-256: a707afb07347da52aafc8445dcad88e9a587850364a5dc311ae1f5791c91ebcf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded links, particularly the one to 'ttraff.ru', suggest an attempt to redirect users to potentially harmful content. The document body itself is heavily obfuscated and appears to be largely unreadable text, further supporting a malicious intent rather than legitimate content.

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=expos%25C3%25A9+sur+le+bilinguisme+pdf In PDF document text
    • http://files.relationalintegration.org/uploads/1/3/1/4/131438248/7b3ecd.pdfIn PDF document text
    • http://files.memorybengesa.org/uploads/1/3/1/0/131070561/0002bbc3f3f8.pdfIn PDF document text
    • http://files.pilgrimlutheranfreedom.com/uploads/1/3/1/6/131637014/3448616.pdfIn PDF document text
    • http://files.kupetspinkinvitational.com/uploads/1/3/2/8/132815119/8444318.pdfIn PDF document text
    • http://files.thekissinglipsofamerica.com/uploads/1/3/1/4/131437889/kalamapiloniweb.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/1/0433/0687/7080/files/tugomedimugatusigoxafif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0207/6070/files/52747160914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6176/2456/files/bigivalowovevuxejazenasim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/degazinopifox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7319/1587/files/reguzeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/vufija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/kapewawere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/77648669896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/watijodaduzo.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_off00009697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9697 5260 bytes
SHA-256: f41ce6ed85ea8fdecc18673d31b0ef4cde877e2346344338fa7b06a50166e906
font_01_sfnt_off0000a814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA814 12400 bytes
SHA-256: 8c70db7bd03f80580dd6614de711060b4f8b38863aec0d03cb4a7668709bd919

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