Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbc810719e7a74c3…

MALICIOUS

PDF

34.8 KB Created: 2020-08-11 01:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9037fb8834c3ff386fedd2f41f9421b1 SHA-1: ba4acf39dc87f1820ac33d4e631aee7c42989101 SHA-256: cbc810719e7a74c3c4f781ae198e85f846e75ccebac5ddfa07b4a4c741b605de
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to known malicious infrastructure. The document body text and embedded URLs suggest a lure for a free book download, which is a common social engineering tactic. The primary malicious IOC is the redirector URL, which is likely used to serve further malicious content or phishing pages.

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.cc/pify?keyword=bloodlines+book+1+pdf+free+download In PDF document text
    • http://files.sivitgear.com/uploads/1/3/0/9/130970003/6856326.pdfIn PDF document text
    • http://savozaze.sparklyhealthandlove.com/uploads/1/3/2/8/132814930/sapekerisome.pdfIn PDF document text
    • http://files.fallline.org/uploads/1/3/1/4/131453657/nilojidafobo_xixilen_tovunu_mesatede.pdfIn PDF document text
    • http://xuvutakoz.a1fitnessusa.com/uploads/1/3/1/6/131636655/f6187b6d9bc697.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/1/0429/0120/9251/files/rusotumopip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/88518672108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/rubizelevuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8217/6920/files/73372984399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/agile_testing_quadrants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/adobe_reader_apk_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/22906925403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/kirarogurififekevakol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/tojas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/meges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/savuburave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/manorama_year_book_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/basic_sociological_concepts.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
🗂 Part of campaign: mdeasonphotography.com 5 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8C 5432 bytes
SHA-256: d9f2b21150e6920b080b4ef30276910a9c33f1d3855fbd2d37bf932f6fc9850f
font_01_sfnt_off00005d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D25 9564 bytes
SHA-256: 96ef26ee84a4318025d2292c5021e1d196d177db0f3ce1e31bee3ba239dd89ad