Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1238f2816925009…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 10:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52505fbb868fbfbf94e9af6433a76df0 SHA-1: fc336a3d7ce8b2b8110c57402eee747ebdd97541 SHA-256: d1238f28169250095d64c5056385628fb0dcfe68f0f2e5f5be8babd6e30449ce
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with heuristics indicating it is a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which in turn leads to a Shopify-hosted PDF. The document body, though heavily obfuscated, also contains these URLs. The primary attack pattern appears to be the distribution of a large number of links, likely for SEO manipulation or to host further malicious content.

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=lichtenberg+wood+burning+microwave+transformer In PDF document text
    • http://files.makejaxweird.com/uploads/1/3/0/8/130874296/zevipuvuveg.pdfIn PDF document text
    • http://ridilane.theresathorne.com/uploads/1/3/1/6/131606289/ff2437f5.pdfIn PDF document text
    • http://magazur.rosamarinaboutique.com/uploads/1/3/2/3/132303382/pegisalulilu-xogekopigojaku-devuvejumubusi.pdfIn PDF document text
    • http://files.digginthenew.com/uploads/1/3/1/6/131607321/5752519.pdfIn PDF document text
    • http://bimil.fresnotreeservicecompany.com/uploads/1/3/1/4/131483371/1978acb5.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/1/0432/3203/4976/files/likinovutotewarivovos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3832/6432/files/european_resuscitation_council_2018_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/97101670718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/assassin_s_creed_odyssey_guide_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/zara_bedding_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/91161514433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/composition_of_functions_worksheet_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/92322156164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/4518820439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/volkswagen_jetta_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8609/2190/files/rt_n66u_tomatousb.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: fresnotreeservicecompany.com 4 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000696c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 5636 bytes
SHA-256: 6dd4351b7f9afe54fdc4632aa24fdccec53f2ba89ad1c2bb256f012dd84b9eb5
font_01_sfnt_off00007c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C71 9664 bytes
SHA-256: 54d44dfebbe64deac778ad043929165f5c5e647525c9dbfad1577e42f7766afc