Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7fac5ecc2cb6a1…

MALICIOUS

PDF

56.6 KB Created: 2020-08-07 06:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf00e1d7c5a405120dbd8fa69624920a SHA-1: 7362fa911def1de0b502c5c977342aaf4c6d930b SHA-256: ff7fac5ecc2cb6a177803d8a89a22a5da5aafe1fd2f796c32e69d7b638e19272
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a phishing or scam attempt to redirect users to malicious infrastructure. The presence of a large number of PDF links further indicates a link farm or SEO abuse tactic.

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=centrifuge+machine+function+pdf In PDF document text
    • http://pukuli.spiritwickcandleco.com/uploads/1/3/0/7/130739835/822241.pdfIn PDF document text
    • http://files.amotivatinglove.org/uploads/1/3/1/3/131379252/puvujagenibid.pdfIn PDF document text
    • http://files.farnhamloveyoga.com/uploads/1/3/2/7/132710679/xituzinobulunaguvik.pdfIn PDF document text
    • http://files.dandowneymd.com/uploads/1/3/0/7/130776120/bcace9b4af.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/1/0434/0134/7226/files/pojapinaseriledefevafofes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/670831270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/vefuwuworawukevizeboxaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/78384860058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3735/0293/files/28118977085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/mugajatuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/gotup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/numerical_methods_chapra_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/kavesasuleteripokoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/falanit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/13089582812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6404/7269/files/days_of_week_flashcards.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_off0000904f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904F 5264 bytes
SHA-256: d7e77ebb61561242bc29d2e0c24a18d70ad9a798ff3faa6a23ee6f95f9371cca
font_01_sfnt_off0000a203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA203 10836 bytes
SHA-256: 57e148fd893a89d8570fef59a377c63ef69cccf10c8c05e0612751ee6fc81f31
font_02_sfnt_off0000c710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC710 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176