Malicious PDF — malware analysis report

Static analysis result for SHA-256 6693c6307b6ac277…

MALICIOUS

PDF

50.7 KB Created: 2020-08-06 15:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09852152c7c8c6b81373137bdfb869cb SHA-1: 8654f3ffd8ac40014bb8e9cc5d3f82f2e8415b6f SHA-256: 6693c6307b6ac27725ee7bb3e8e899a2080f746026a707f57c80e5a005f37520
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=database+management+system+pdf+for+bsc+computer+science`, which is flagged as malicious. This indicates a phishing or scam attempt, likely to trick users into downloading further malware or visiting malicious sites. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for malicious content.

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=database+management+system+pdf+for+bsc+computer+science In PDF document text
    • http://files.heartlandcustomfarmtoys.com/uploads/1/3/2/6/132695505/8835882.pdfIn PDF document text
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdfIn PDF document text
    • http://files.brittanypelias.com/uploads/1/3/0/8/130874493/3c6ea0f4cb07879.pdfIn PDF document text
    • http://files.shanestay.com/uploads/1/3/1/4/131437017/ganuguwuradibeba.pdfIn PDF document text
    • http://files.ollivlogs.com/uploads/1/3/0/7/130775970/lovidizosavo_vosevufanovog_rifavebada_towafedidoke.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/1/0432/3183/8368/files/fire_red_cheat_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/best_fallout_new_vegas_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/84202832187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/xipitijunafubolopasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1017/6662/files/roxaduvinuxog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/puzolevubesiwemeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/2429170664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/53447985477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/pafijajun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/69310682277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/sineviwawagipewami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/nesowigiwonowewatul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/nomirekadezizom.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7261 5684 bytes
SHA-256: ac9c9665f2e802ae9d9838db8795d25da0d3b075d172c4b1f1570c9b8d1b79d5
font_01_sfnt_off000085ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AE 9960 bytes
SHA-256: 506054631b2c641618f3317ffaac8a66ca72bc0eb4bbc91f48f870e80d9dcfbf
font_02_sfnt_off0000a800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA800 16112 bytes
SHA-256: 366b2a3ed9b44e620159a8175e6f9935b0189d17b94b4d5ccfd5980b0b155f3e