Malicious PDF — malware analysis report

Static analysis result for SHA-256 82711da3292740b1…

MALICIOUS

PDF

49.7 KB Created: 2020-08-05 01:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb63154c8cc5aaae9a75172ae235b1e5 SHA-1: d397b1d93f25b8f48a4fbd58aa1bda4f15aeeed9 SHA-256: 82711da3292740b1b2b4f186673eb049477938af09022e08cd95865f1b6abfc3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector infrastructure known for malicious activity. The document body and embedded link actions suggest a lure to add a digital signature, which likely leads to a phishing site or a download of further malicious content. The presence of many SEO-optimized links indicates an attempt to broaden the reach of this lure.

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.com/pify?keyword=adicionar+assinatura+digital+pdf In PDF document text
    • http://files.thelutherie.com/uploads/1/3/1/4/131483336/devujatugebe.pdfIn PDF document text
    • http://files.williampeskett.com/uploads/1/3/1/3/131379699/8700188.pdfIn PDF document text
    • http://files.vapethecrown.com/uploads/1/3/0/9/130969160/tuwupugavig_rezeped_gekowitefe.pdfIn PDF document text
    • http://files.abclocksmithsadelaide.com.au/uploads/1/3/0/9/130969430/xekukitapa.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/1/0432/3871/9648/files/tasuluxejugimedos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/4684220819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/lizemapawabamumed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/wuzunonulonofelafusofiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/asfixia_perinatal_gpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/83064080215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0386/9346/files/cytology_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/catalogo_jequiti_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/lajabovafegifimegatazoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5650/2686/files/the_apocryphal_new_testament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/14971713928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/wrist_exercises_for_carpal_tunnel.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
🗂 Part of campaign: burntofferingsbbq.com 5 samples

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_off00008575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8575 5312 bytes
SHA-256: bde40dad0f15e8847eb50247abddadaf276363430ba4f3103639c806e29dab75
font_01_sfnt_off00009797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9797 10128 bytes
SHA-256: 8fcb22d5cd6608d0064faf00cf39a42d499387c983c63ed4d0805d1de46c5eaa

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