Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0278a680979ee1…

MALICIOUS

PDF

46.1 KB Created: 2020-08-11 23:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab7f3967cac748238d00b8bbd7f7733f SHA-1: f0551593b79c19bd28b8fd731035e0e897519da2 SHA-256: bf0278a680979ee10a4203ed3626c95fcd9df7dad4eb1a5716bb24b7bbfe31b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, and one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains references to educational materials and the malicious URL, suggesting a lure to trick users into visiting malicious sites. The ML classifier strongly indicates 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.cc/pify?keyword=igcse+computer+science+workbook+pdf In PDF document text
    • http://wefop.pushpamalextalaiver.com/uploads/1/3/1/3/131398097/da50a3a70c6c1a.pdfIn PDF document text
    • http://files.theportlandtowingcompany.com/uploads/1/3/2/3/132303353/fajor_gojerogitid.pdfIn PDF document text
    • http://files.atomicnature.org/uploads/1/3/1/4/131483097/gururip_gosaker.pdfIn PDF document text
    • http://files.cwgtshirts.com/uploads/1/3/2/8/132814624/ganabife.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/1/0430/7252/0352/files/tazuwoxalukekidetunabigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8845/files/gasekevukawupuxumuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/kuzedaxarajedarifila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/11557754338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/90081731924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3645/0714/files/mozetijefirope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/tekkit_legends_sphax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/4523212701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/37194680791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/aaron_lewis_country_boy_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4371/6262/files/48311887296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3059/3186/files/pofebezonatuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/jinoxudenewifadorod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/40832305364.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6880 5348 bytes
SHA-256: 5c1700b0be6c0d85355e592d3eae3581b14fefdb631b0473f7dc1a10012c9974
font_01_sfnt_off00007aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAC 9980 bytes
SHA-256: a6898d4957111e06401c2291fb545ca6a3035d4b676360303661cfba5d69553d
font_02_sfnt_off00009cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e