Malicious PDF — malware analysis report

Static analysis result for SHA-256 d461add861336fff…

MALICIOUS

PDF

32.9 KB Created: 2020-08-19 15:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ed09550cebd196cad8c303e3fb0eef4 SHA-1: dec176b5dd1fc3c9e794cc8b022eaa09c4b3971d SHA-256: d461add861336fff0f4fd2a1945ee312f79f0e5105a6404c1579f5f099c34a7f
234 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=jll+office+report+2018'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure related to a 'Jll office report 2018'. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=jll+office+report+2018 In PDF document text
    • http://files.arizonastatecornholechampionships.com/uploads/1/3/1/4/131453221/ef6307bce0d4fa.pdfIn PDF document text
    • http://files.nauiv.org/uploads/1/3/1/6/131606046/2406219.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/1/0436/8911/5801/files/befidijovofakiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/jenidixawamikom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2013/9170/files/hip_fracture_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9114/9475/files/introduction_to_mole_ratios_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/74797060561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/rofanulorononeziselatibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/35092555467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2925/6602/files/sajaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/53139616604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70745323757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/fundamentals_of_organometallic_catalysis.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_off00004507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4507 5128 bytes
SHA-256: a9c4a4d8c59349620e4a8da4472735ea2be19ab4c1c9a4ede19f8bd59688f0b3
font_01_sfnt_off000056a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A0 9520 bytes
SHA-256: c2be729b12ea9961a254e44156e53f318a59d72e52014ada460f30d9467b5783