Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaec3aac95948bc5…

MALICIOUS

PDF

34.5 KB Created: 2020-08-19 10:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2e5b051b8665d6cf068f45358e2d538 SHA-1: 97c6303270fca6ea4e9fbfbffbeaee8e8b805856 SHA-256: aaec3aac95948bc587235ca2a337fabb3d9e22fe24481bf81e9fe67b575ad4dd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common technique for SEO poisoning or creating link farms. One of these links redirects to a known malicious domain (ttraff.com), indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=bulliform+cells+are+present+in In PDF document text
    • http://rororejab.jamesjosephlloyd.com/uploads/1/3/1/4/131437689/3735576.pdfIn PDF document text
    • http://files.wetproposalapparel.com/uploads/1/3/1/4/131452989/16cc2e4.pdfIn PDF document text
    • http://jiwiv.biopharm-careers.com/uploads/1/3/2/8/132816036/mepiragifesuzop-wutax-tilubuv-gitejutas.pdfIn PDF document text
    • http://files.oakparktheatre.org/uploads/1/3/1/1/131164251/pifaxobaxujale-kojeramufubu-lurebepa.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/1/0438/0783/4272/files/free_html_bootstrap_portfolio_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/weatherman_report_about_rain_in_chennai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7125/0335/files/27411754224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/vow_renewal_ceremony_wording.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/21932967870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7313/2954/files/zemuziweguvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/latowugejozokitenukopid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/45035390982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/sobomojevupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/10334513196.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B14 5212 bytes
SHA-256: 6f3f2753bdff808072bdeba8e43cfe487d1835e4a882534bcbbff7836641b381
font_01_sfnt_off00005cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 9576 bytes
SHA-256: 4b7411bbf92fe99ef053a369618cadb1042951d5223a2593f4b94a47358b6386

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