Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ea374da12680bc…

MALICIOUS

PDF

54.0 KB Created: 2020-08-05 04:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cbeae71aed1b0d25820a504bf9f7e32 SHA-1: 5edce34e8868552c90dfb074cdf4cc238187ada3 SHA-256: a4ea374da12680bc1da1beff7e6fbadef321e2e653815ff802fb98c1d8917ecd
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'butchery business plan', aiming to trick users into clicking the malicious URL. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic, common in phishing and scam operations.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=butchery+business+plan+south+africa+pdf In PDF document text
    • http://files.harpmelodiesbymaddie.com/uploads/1/3/1/6/131636972/sovikival.pdfIn PDF document text
    • http://gisamitin.moparmuscleofcentralpa.com/uploads/1/3/2/6/132681556/misimanuw-votageb-turovuxiregime.pdfIn PDF document text
    • http://files.thyme4lunchcafe.com/uploads/1/3/1/3/131378952/muperajak_jegenorafe_zekewamaf_kosija.pdfIn PDF document text
    • http://files.portlandtouchrugby.com/uploads/1/3/0/7/130775400/xisijabujoxogeb-warik.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/1/0446/8968/6681/files/binding_of_isaac_rusted_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/gatalepem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/pepipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/82526960142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/sedaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/understanding_how_to_fight_the_good_fight_of_faith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7841/0655/files/pepale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/pivivelaposorijotopojivoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/radosejir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/85489534577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/nejowege.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_off000084a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A8 5416 bytes
SHA-256: 6da7b510e2a11e1d87e291efd3da96d63274624a9bd712f0f59ca62130eaa4a8
font_01_sfnt_off0000970b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x970B 10900 bytes
SHA-256: db7135217fd63e85dc0e52ff9ee79c77a6ab9b7a831582e089bd17d4718f15e0
font_02_sfnt_off0000bc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC32 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f