Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c7721db06a3d1d…

MALICIOUS

PDF

52.2 KB Created: 2020-08-28 12:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2d2f2cb158df74d536ca79cb6436da9 SHA-1: 3cb5aac38c07fa80f9d3ceb28e896706a99c6b13 SHA-256: 11c7721db06a3d1d792a6b4641c0560dfbdda5870f024c49fbfd3ce13f1dc756
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to a phishing or malware distribution scheme. The embedded URL 'https://ttraff.com/pify?keyword=duerr+chipper+678+parts' is identified as a malicious redirector. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to malicious content, likely for initial access via spearphishing.

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=duerr+chipper+678+parts In PDF document text
    • http://tanim.themayecenter.com/uploads/1/3/0/7/130739678/vixezi-kageduwelib-misagaforug-xezajafod.pdfIn PDF document text
    • http://files.snowsbendfarm.com/uploads/1/3/2/6/132681694/42f7418.pdfIn PDF document text
    • http://files.truthserumhottopics.com/uploads/1/3/1/6/131606619/geseparajiga.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/1/0429/6779/3820/files/86336103529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8887/files/cardiac_tamponade_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/the_three_musketeers_by_alexandre_dumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3335/3627/files/ecg_interpretation_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/anet_a8_3d_printer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/pufebab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/60433120711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/36405227459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/wotezunafote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/bipogidukugosuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4353/4486/files/heart_disease_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/69941781725.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6858 3312 bytes
SHA-256: 082c89522e4251f0a814862fddf633b1dac669eb780a02580130c1f52bfffe84
font_01_sfnt_off00007439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7439 5416 bytes
SHA-256: 89f06cfac212850402c2a29b7fe3433ef10e923ee110887bb25c01c9ddfe5e60
font_02_sfnt_off000086a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A6 11292 bytes
SHA-256: ff1f2ce29a8b97480d0b96487b863dc38a9d6a9f5632b206e4ab8cdddc259630
font_03_sfnt_off0000ad2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2D 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848