Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4df8e1b1b6f816e…

MALICIOUS

PDF

47.2 KB Created: 2020-08-26 16:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4487832bef874056c2391d9353aa4f63 SHA-1: b3e47c4e3fd3c9024a096f77edbedbe621bdc054 SHA-256: b4df8e1b1b6f816e61fd6021aa1c3a197d673bdd50dcbd6f5aff777a7007b1a2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to Discord and a URL that is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, potentially for phishing or to download further malware. 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.club/pify?keyword=see+if+someone+blocked+you+on+discord In PDF document text
    • http://files.holleywoodcontracting.com/uploads/1/3/0/7/130775652/a19a3.pdfIn PDF document text
    • http://files.partytokyovip.com/uploads/1/3/0/7/130775639/lotojategukagisiko.pdfIn PDF document text
    • http://tozoguza.cmssalvage.com/uploads/1/3/2/6/132681264/mapukubafi_vupesudawusuf_vurugumojukakuw_xafivat.pdfIn PDF document text
    • http://dogif.alexbaltodano.com/uploads/1/3/2/6/132696056/2cad32d.pdfIn PDF document text
    • http://kegiwof.rogertiley.com/uploads/1/3/1/8/131856543/bba7c.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/1/0439/2130/9851/files/75655054913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4828/files/foriwujefewobudijefedaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/arteriovenous_malformation_colon_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/90515266749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/ptosis_exercises_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/83814261836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/dipazebek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0387/6252/files/7783888482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/kilajelopedoxegowogewive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7218/3703/files/xopunupivasatike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/worekuzufu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2E 5168 bytes
SHA-256: 14b0c207ad3c8b1b21ff5b9548d2b9eeffb21d1334d0ce4e1b891f72c5bca942
font_01_sfnt_off00007ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA2 10196 bytes
SHA-256: 50e23bef030b0b58de12b3c195620d68914495efbab27d52c744a0eff21b669d
font_02_sfnt_off0000a182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA182 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378