Malicious PDF — malware analysis report

Static analysis result for SHA-256 71df88bb68be9bfd…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 16:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dae76a83e31df1359f15da4abaacb1f SHA-1: eb0c717c75d98ec4a1d26311fce282b5fd619042 SHA-256: 71df88bb68be9bfd0fff000cf5decd2bd5b36d9c02c3980f215d248beaeaa0dd
192 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a likely phishing or SEO scam attempt. The embedded content, though heavily obfuscated, includes the malicious redirector URL and numerous other links, suggesting the primary goal is to direct users to potentially harmful external sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=agad+bam+nagada+song In PDF document text
    • http://files.stillpointatbeckside.com/uploads/1/3/2/8/132815183/kaxoriwonavakidu.pdfIn PDF document text
    • http://sigefozaw.jackandjeffdenimco.com/uploads/1/3/1/4/131438379/4640945.pdfIn PDF document text
    • http://vikiv.sophisticatedfit.com/uploads/1/3/1/8/131857565/a17ec6c.pdfIn PDF document text
    • http://files.judyatraveny.com/uploads/1/3/0/9/130969472/vutuzu-guxefavomowix-gemoretisuxevo-kekoxuranu.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/1/0438/8644/4699/files/75282225244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4754/9088/files/berceuse_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/fe_mechanical_review_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/bambukat_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1370/9730/files/kiwigimuxeponexalukudibod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0729/files/acca_f9_short_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1658/5379/files/36422298998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/katevejimeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/fevanepogalosemozem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3846/6460/files/anemia_ferropenica_en_embarazo.pdfIn 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_off00005d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D52 5148 bytes
SHA-256: 57fbd4e6066c265d26729e1878052ecacac0d5f621ecae43054404d16dcdb1f8
font_01_sfnt_off00006ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC5 14248 bytes
SHA-256: 0036ef95024be6bb5837e911890f2b29f1b3cb8296ef7d44730966603e230062

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