Malicious PDF — malware analysis report

Static analysis result for SHA-256 f988117cf454aeab…

MALICIOUS

PDF

41.8 KB Created: 2020-08-23 22:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a879847387659c90fb533d9088aa3a5b SHA-1: b1d007e2079d9b135ed815430932c82c14f4727a SHA-256: f988117cf454aeababe80ce32b4c7b3dae2d179e3e8b38fc249a74b3bd12d940
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, masquerading as a Southwest Airlines baggage damage claim form. This is supported by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the embedded URL. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or to distribute malicious content. 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.ru/pify?keyword=southwest+airlines+baggage+damage+claim+form In PDF document text
    • http://files.afterthefallinc.com/uploads/1/3/0/8/130874213/burifikivaberu.pdfIn PDF document text
    • http://files.terricohn.com/uploads/1/3/0/7/130776594/5786881.pdfIn PDF document text
    • http://zirebi.richardpmann.com/uploads/1/3/0/8/130874474/9710240.pdfIn PDF document text
    • http://files.lake-kabetogama.com/uploads/1/3/2/6/132682701/e7f9b806011061d.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/1/0429/3902/3526/files/62867483116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8068/files/98302259794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1964/1503/files/bronchiolitis_aap_clinical_practice_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9434/3834/files/farujomifanajojoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/26220670106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/assessment_center_ejemplos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/engineering_leveling_guide_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6656/3487/files/ranedenenajizit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/nosafinug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/75318610740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/resanurewewasaziwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/kaxogujewebetosuvoban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/mejumamizeforusanezu.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 8

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_off0000659f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659F 5772 bytes
SHA-256: d80862beb28a6b63843a06f8eccc18442076e735adcd87f7cf75ef53cd877e77
font_01_sfnt_off00007920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7920 9616 bytes
SHA-256: 8168a0f5a73ca04f4279c999c51fac51774b8b45d677c2f08e00baa314a9cb47

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