Malicious PDF — malware analysis report

Static analysis result for SHA-256 77862eae8d535a05…

MALICIOUS

PDF

39.1 KB Created: 2020-08-13 14:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a260e698f927a59c0baaec611c5c8513 SHA-1: 846ab877eb0bf4a16f6e90da9cd4ab49943adab5 SHA-256: 77862eae8d535a05892afe2db1f4ed62a1f31755827e41c11130c4770165fd44
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to redirector infrastructure like 'ttraff.com', which is flagged as malicious. The document body and heuristics suggest an SEO spam or phishing lure, aiming to drive traffic to potentially malicious sites. The presence of many links to external PDFs, some benign and some unknown, indicates a link farm strategy.

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/wb?keyword=reported%20speech%20commands%20pdf In PDF document text
    • http://vupimiw.chargerchoir.com/uploads/1/3/2/8/132814930/fe9958c.pdfIn PDF document text
    • http://files.writinginarowhouse.com/uploads/1/3/1/4/131438611/xivosajigotozusafope.pdfIn PDF document text
    • http://files.cannabisandhemp.org/uploads/1/3/0/8/130874359/botexifonixi-kalurakeresap-pubuxuzujovejo.pdfIn PDF document text
    • http://files.primroselane.com/uploads/1/3/0/8/130874162/zamagoxipo.pdfIn PDF document text
    • http://xisowuler.nomnomnatural.com.au/uploads/1/3/2/8/132815028/dalumebufobu-nupirenejaku-wisoxasow.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/1/0437/2630/7480/files/scientific_names_of_common_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5710/files/altaf_hussain_hali_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1825/9365/files/kanye_west_flashing_lights_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4231/4152/files/pasta_recipes_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7865/4883/files/mafiluluxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/puwagerafinokotanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/51278650043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/sixuferejadekusaxujipibez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/nanomaterials_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/80509903322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6221/4304/files/84601325610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/small_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/66546958769.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_off00005acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACF 5368 bytes
SHA-256: 11f5be0b16bec0eac90abee9d6c9a229ede164ef69765fa64f73fd9327d4332a
font_01_sfnt_off00006cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF2 10008 bytes
SHA-256: b84296d513416bca0f395f3f0ac2eac9ae363ef11dac9c718abbca0e0b4d05bc