Malicious PDF — malware analysis report

Static analysis result for SHA-256 948ea394feae4a10…

MALICIOUS

PDF

37.1 KB Created: 2020-08-18 15:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29452c8da72bf89e35ddac7380d645d3 SHA-1: e4b02d2c87a750f8c7580477b5167c2400e2c390 SHA-256: 948ea394feae4a1064c02ce90b2c49f988c43012fc1cbdb3f65cd8fc42850ce0
162 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. Additionally, it contains a mass of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bohemia+song++mr+jatt In PDF document text
    • http://files.road2gold.net/uploads/1/3/2/6/132695321/xalewafov_meladur_lirobazefus.pdfIn PDF document text
    • http://files.microbeautybykaylen.com/uploads/1/3/0/8/130813639/49316954678.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7795/7800/files/bianchi_mtb_sizing_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/anbae_per_anbae_song_ringtone_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5123/8047/files/thank_you_letter_for_teacher_from_student_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1142/files/8986626582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3955/9578/files/46532062736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/doferufotod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/nemiwosajesojug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/integrated_pest_management_program_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/17638411391.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000464c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x464C 4980 bytes
SHA-256: 9ae58eb52470438e56f616f512899ced4012ed2e7eda804dd9678c418d7095d9
font_01_sfnt_off0000570c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570C 10228 bytes
SHA-256: 11a0f10f82c7386b5b9cb0065f37e58cef2d269e9af94c26ab1a08bf212487e3
font_02_sfnt_off000079eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EB 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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