Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d8aac37e0d7da5…

MALICIOUS

PDF

46.0 KB Created: 2020-08-14 22:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63e3b0c8ff2e83dd51eb3914f01b4b93 SHA-1: 37d0ba745922744c94d4a723cb606e21a52c4676 SHA-256: d9d8aac37e0d7da56c63fad2e4888e291fa810449b837838b0d62c2fc673f796
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=loan+agreement+template+uk+pdf'. This indicates a phishing or social engineering attempt, likely to trick users into downloading further malware or visiting malicious sites. The document body, though heavily obfuscated, contains references to 'loan agreement template uk pdf', reinforcing the lure. No scripts were extracted, but the presence of multiple external links, including a malicious redirector, is sufficient evidence for this assessment.

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=loan+agreement+template+uk+pdf In PDF document text
    • http://files.davideweed.com/uploads/1/3/1/3/131381679/tomejawux.pdfIn PDF document text
    • http://files.mibelting.com/uploads/1/3/0/9/130969986/nufepagukero.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/1/0433/0687/7080/files/65233410578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/add_repo_to_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/vejaneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/9124/1634/files/easy_christmas_carols_guitar_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9159/1317/files/44948541195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/wudov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/17180033859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/7596/2789/files/65421306450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/tuvokobuxafiwebutiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3077/9816/files/81655982850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/fedufurudijedib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/58555159085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6050/1407/files/3949487238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/jeserimijis.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_off00006773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6773 5020 bytes
SHA-256: 858bbcdf3d21651baa087aabfd45b3b771d21ae605e51e8b160adb053e6b2447
font_01_sfnt_off00007876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 10880 bytes
SHA-256: 5a7b08d80aa3bae82c801bc5fde1ad16c29dea871baf4c705c1346bf3734417c
font_02_sfnt_off00009cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3