Malicious PDF — malware analysis report

Static analysis result for SHA-256 515aa70a12516667…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 05:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5d265958ec8175cd44a53f62f9191d2 SHA-1: 036e6e9ae9000880037d5afbb5526d24255bd4cf SHA-256: 515aa70a125166677b81979266d6421a9886628adde81cc9d4e59ab259bc8ffd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.com/pify?keyword=irinox+blast+chiller+pdf'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The ML classifier also strongly indicated 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.com/pify?keyword=irinox+blast+chiller+pdf In PDF document text
    • http://gipakumit.lutateacher.org/uploads/1/3/1/1/131163635/3209999.pdfIn PDF document text
    • http://files.buscolibrary.org/uploads/1/3/1/4/131438474/8237223.pdfIn PDF document text
    • http://files.natalieberry.net/uploads/1/3/0/7/130775063/0426ee02a314.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/1/0429/1526/6713/files/81810833280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/rojugawepofiluzoxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2838/0839/files/7128910296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/42451254971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/barreras_de_la_comunicacion_administrativa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3286/1079/files/bundesliga_spielplan_2020_20_bersicht.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/50861512056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/guwamutusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/54740536661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/bottom_up_merge_sort.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/42557915727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/46005805007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/8782536927.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 5

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_off000065c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C1 5388 bytes
SHA-256: 4c6d87654370cfcf715d4ee6a432bdea2c8b3daeebcd7422b298860fab74c306
font_01_sfnt_off00007812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10724 bytes
SHA-256: 3217e7c9148e0a2b8afe2696db86b057f44bd26fac4ecb7ca5c422787b8ae8c8

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