Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1fcc3a03d1fede…

MALICIOUS

PDF

40.8 KB Created: 2020-08-17 06:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e13dd7d97aebda3c8c833f7362cbb108 SHA-1: 7ffaec72ae2cc575401e7f86ba2305d4c4df4bf6 SHA-256: ef1fcc3a03d1fede9bde6d623bef731215edb547ea3d0feb601f87967fdb206c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files. The primary attack vector appears to be social engineering via a deceptive link, likely leading to a phishing or malware distribution site.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=blackjack+bold+font+free In PDF document text
    • http://ramut.noyeslibraryfoundation.org/uploads/1/3/0/7/130739964/wiluluxatope_demiboludilolif.pdfIn PDF document text
    • http://files.standepiscopal.org/uploads/1/3/1/3/131384436/powilim_nixuvikefowu_wagipamilo.pdfIn PDF document text
    • http://files.rtdresssing.com/uploads/1/3/1/3/131380759/tuzovereled.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/1/0429/9204/2137/files/87841049541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/cultivo_de_cebolla_china.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/lotovomiduwutux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/kibuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/bigaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8870/5688/files/the_frostrune_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/29137533734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/1695719079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6464/6049/files/77776725346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/shawn_mendes_show_you.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_off00005522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5522 2960 bytes
SHA-256: a4eee3438a7246650f0a21218a9bc29d7bc7bf1b287bce9df301f714692068dd
font_01_sfnt_off00005fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA6 5164 bytes
SHA-256: 93fe44d60777b6ea57939fea11bae7a53e8509078646c8f0e5b0f7efce1365a1
font_02_sfnt_off00007141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 10756 bytes
SHA-256: 535114a67f592beaee48ee97d17846351c9d2ec1ae17d1619c421104557d4cba