Malicious PDF — malware analysis report

Static analysis result for SHA-256 761e0527e30284d9…

MALICIOUS

PDF

41.3 KB Created: 2020-08-13 16:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 308fa24ee87841d87b9747abf4e52e46 SHA-1: fd88b36c9a293b7bde8503a3862e84d8e6e46e5c SHA-256: 761e0527e30284d9649ca9cafbd560109a8e3773de81078a4bb163b912b50d0d
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.ru/wb?keyword=cpns%20kab%20tasikmalaya%202018%20pdf, which is flagged as malicious. This suggests the document is part of a link farm or phishing campaign designed to lure users to malicious sites under the guise of providing documents.

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/wb?keyword=cpns%20kab%20tasikmalaya%202018%20pdf In PDF document text
    • http://files.shiningstarva.com/uploads/1/3/1/4/131454172/1901447.pdfIn PDF document text
    • http://xiduzopo.silverfernflag.org/uploads/1/3/1/6/131607062/d44071.pdfIn PDF document text
    • http://vefenu.milliesjumps.com/uploads/1/3/1/3/131383483/febidoz.pdfIn PDF document text
    • http://files.sthlmtapas.se/uploads/1/3/0/9/130969424/70aa62.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/1/0432/9357/3288/files/silasosovuxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4097/files/38027499880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0473/9232/files/aula_de_espanhol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/55891764274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/21872075943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2688/9369/files/zagufanilifonikebope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/tavutaduvinegirir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/76247600948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/viwajokavizujasoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6880/1702/files/present_perfect_with_already_and_yet_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/mexaditiropabudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/definicion_de_administracion_hotelera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/59725359762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/51136142297.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_off000060e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 5820 bytes
SHA-256: a69c01b82f49763f533f92f8cca3cd970061aa2948564c6eaab1c39f809b0322
font_01_sfnt_off000074ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AD 10532 bytes
SHA-256: 01a779f619413effddc95559f2aa9a889c2f7e554f0585bc2d45ea22d85c8a6f

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