Malicious PDF — malware analysis report

Static analysis result for SHA-256 246a20d06ce17356…

MALICIOUS

PDF

36.3 KB Created: 2020-08-14 20:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb1632bda1e7216460b268484e7ab5a2 SHA-1: 6347476f63f8116b0a2968742684fb6a64211aa5 SHA-256: 246a20d06ce17356de1f85cda6cff29bb1a8527160287c5973fbb9b3d9eec80f
234 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link to 'ttraff.ru', indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the target URL 'https://ttraff.ru/pify?keyword=angrily+crossword+answer'. This suggests the document is designed to lure users into clicking the malicious link, likely leading to further malware download or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=angrily+crossword+answer In PDF document text
    • http://files.twingingit.com/uploads/1/3/1/4/131453645/3502f6b95.pdfIn PDF document text
    • http://xefed.wakelandcolorguard.org/uploads/1/3/0/7/130775429/9fe4f5476fcb.pdfIn PDF document text
    • http://rudawoj.rlbciviccenter.com/uploads/1/3/1/4/131437089/2798543.pdfIn PDF document text
    • http://files.purplelotusspiritualhealinginc.com/uploads/1/3/1/6/131606025/3808512.pdfIn PDF document text
    • http://gavum.schoolhouseportal.com/uploads/1/3/0/9/130969360/nekesavapuruwup.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/1/0428/5222/1084/files/blood_pressure_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0024/1061/files/pisalabegugogodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/84312738396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/askep_blighted_ovum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5085/0709/files/41347025241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65039204935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0077/2254/files/vuvetetinuwezonefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/78037250309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/84317724695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/83328365583.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_off000044f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44F6 5000 bytes
SHA-256: 4017cef986df022bc40b621e8ff1abfa57677e8c11e3cfb32508f50f0260ed9c
font_01_sfnt_off000055f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55F7 9448 bytes
SHA-256: b690d3663a28c774ae92c92574d5b82ec541b8cf62f152cfd7022ca292c19b31
font_02_sfnt_off00007668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7668 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e