Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2dc08de0b28d30d…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 12:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71f4eacf4d440265fb7c1bb7e2c9f712 SHA-1: f4ad668b5b7f142363cb02e3dffc9597e6f6f560 SHA-256: d2dc08de0b28d30dd15d36abb169e80c21c4928abc76fb86e96925107be81d28
202 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links directs to a known malicious redirector. While the document body contains text related to reproduction in plants and animals, this appears to be a lure to disguise the malicious nature of the embedded links. The file is likely used to distribute further malicious content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=sexual+and+asexual+reproduction+in+plants+and+animals+pdf In PDF document text
    • http://files.madisonstinemetz.com/uploads/1/3/0/9/130969790/952d6ea5e5a982.pdfIn PDF document text
    • http://files.windyoakes.com/uploads/1/3/0/7/130738881/loralitunumozikodak.pdfIn PDF document text
    • http://files.storyshack.org/uploads/1/3/1/3/131384113/xidubixojizajipap.pdfIn PDF document text
    • http://jisagova.yourbesthealthbyfriday.com/uploads/1/3/0/7/130775971/fuxurofi_pizaxazen_zalisekesi_zusukar.pdfIn PDF document text
    • http://files.hiflos.com/uploads/1/3/1/6/131637679/kejexav.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/1/0437/2958/4293/files/verb_be_present_simple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/sitapurogoroni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2132/8807/files/japexererodujavuwitovum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/zufuteguwarafov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/38348607040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/articulos_cientificos_de_biologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5419/7910/files/stay_hungry_stay_foolish_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7242/9980/files/69268075261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/xebifo.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 7

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_off0000644f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644F 5472 bytes
SHA-256: 8e474a239efd7b63453ecf6c9d0a487e4bc80eb0a3adba48e04e2c4975a730a6
font_01_sfnt_off000076da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DA 10552 bytes
SHA-256: 5bd10593610edbcef0eb468a561375cdbbfaddbc0ea790cc3d14714dc1bcbbc1

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