Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff382b6e35fc1da…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 14:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5fe690fa11cdfcebf9588d6a1b45278 SHA-1: f19661bc0f9ea41a2fa992a20ee8826be66ac380 SHA-256: 5ff382b6e35fc1da297316f3ed2f434b1c9a5a09deaba08a5c6e538b79d6e1bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. This indicates an attempt to direct users to malicious infrastructure, likely for phishing or malware delivery. The presence of a link farm suggests an SEO-based lure to attract victims.

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=gamepad+terbaik+untuk+android+tv+box In PDF document text
    • http://files.replenishnaturalhealth.com/uploads/1/3/1/3/131382239/bunededivigi_momala_xamakamawizi.pdfIn PDF document text
    • http://rezowokez.loyalintent.net/uploads/1/3/0/8/130814328/wuwatew.pdfIn PDF document text
    • http://sakutema.jeremyallenmoore.com/uploads/1/3/1/0/131071164/pivivurutawu.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/1/0427/9320/5916/files/zasepatosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6310/9790/files/sea_animals_worksheet_for_preschool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/basic_excel_test_for_interview.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/36343596616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/fujuzoduzudowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/muwolajeligopamabezilisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/72850345673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/dujibavaturo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2949/4940/files/beauty_and_the_beast_2014_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/analytical_reasoning_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E4 5256 bytes
SHA-256: e16c067e7712329f030f53d48d98d66c335110039ab201c9610fdc500a7ecc42
font_01_sfnt_off000078c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C2 10032 bytes
SHA-256: 87726fb4e5e61f2627d55b17251afe0086645d29c9fd36a107015caad826aca9