Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e18d6fd2667473…

MALICIOUS

PDF

47.4 KB Created: 2020-08-08 20:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5997a3ab3ef3e34a6af96f8cd75466de SHA-1: 0a1d24b12fa2f0c05720a612a0ff11518c858ca6 SHA-256: f1e18d6fd26674738e75895da7ce50c924b307c32e89e74206d3fc0a7db70388
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector at `ttraff.cc`. The document body, though heavily obfuscated, contains text related to 'makalah angina pectoris pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious content. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination. 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.cc/pify?keyword=makalah+angina+pectoris+pdf In PDF document text
    • http://files.malovicmak.com/uploads/1/3/0/9/130970004/3647513.pdfIn PDF document text
    • http://files.alexarainewright.com/uploads/1/3/1/3/131379894/kavojusagoposinaret.pdfIn PDF document text
    • http://bawez.tapcanada.com/uploads/1/3/1/4/131453247/zizad_kojudufoburodi_mabito_ferimafu.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/1/0437/0500/8293/files/jukinapupupirireb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/36906747059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/42144215093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/download_abbyy_to_word_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/moxulatodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/18766751773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8933/8276/files/wojidoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/85332214981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/kaxovegevavilonumuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3463/2607/files/suzuremavavumavuxabed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/72560690559.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 4

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_off0000752c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752C 5484 bytes
SHA-256: b7dfa8972ae07da1c90939655a52fa913330eafb39be13b87877dc38a2d97376
font_01_sfnt_off000087da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DA 12552 bytes
SHA-256: e9b14df3fdba16dc6a1fadc9215183143616f979e78c8275bf289de5c30ed671

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