Malicious PDF — malware analysis report

Static analysis result for SHA-256 711a82a504927036…

MALICIOUS

PDF

53.8 KB Created: 2020-08-11 00:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 606d72a44982c9166d9284b11f3d4046 SHA-1: e4bc33bf3c3383fdb14266962d48df567a67270f SHA-256: 711a82a5049270363c120e9a9168a95ebb2fe51e1572715c7bfd21064a2917b6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are SEO-optimized to appear as legitimate downloads. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely used to funnel victims to malicious content. 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=origin+and+development+of+sociology+and+anthropology+pdf In PDF document text
    • http://nexuves.purebredfitt.com/uploads/1/3/2/7/132741194/9101650.pdfIn PDF document text
    • http://files.roscommonsocietyofny.org/uploads/1/3/2/7/132710624/sulizibuge.pdfIn PDF document text
    • http://zokojami.stpetergreene.com/uploads/1/3/1/3/131398097/9e2d2448.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/1/0440/6879/8614/files/sizojawekinubaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/the_alienist_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0620/5857/files/catalogo_ikea_2020_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/aarhus_city_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/active_listening_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/ledadewozowebirakujapov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/48011303206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/nurizititevefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/kiseme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/rimedumevitog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/33248177188.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 2

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_off000083b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B0 5544 bytes
SHA-256: 0f1213412e79dd81604ea89cb3035e99c7ef972024726dbfc1de1943dc93491e
font_01_sfnt_off00009669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9669 10872 bytes
SHA-256: 2f9bbb97c37c336fe3b4725849b38fcab4fe38ef79ef61b6b249e8712283a98f
font_02_sfnt_off0000bb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB69 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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