Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d83299431fa5721…

MALICIOUS

PDF

36.6 KB Created: 2020-08-22 12:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ec9d6df3f35bf1e72030c3e835ad050 SHA-1: e2531a19e50558129a8acace54b90e172df4d505 SHA-256: 7d83299431fa57212ad62cdc93a9941b1842c63384f8cc82105e663174d0d204
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) identified as malicious. The document body, though partially corrupted, includes the same text as the redirector's keyword parameter, suggesting a phishing or malware lure. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=ich+guidelines+bracketing+matrixing In PDF document text
    • http://jukebud.redeemernewton.com/uploads/1/3/2/6/132683008/paginowevugalap.pdfIn PDF document text
    • http://files.gem-uk-properties.com/uploads/1/3/0/7/130776611/e39a673c9c.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/1/0437/1621/4936/files/19673500147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/voleruwevoxaganolima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/www_jakpot_song_com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/cobra_dsp_9200_bt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9008/7829/files/back_button_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8504/1557/files/xasirilonulanupup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3055/6320/files/giteten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/nawawotukitofuluxakob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/kopokikoxijavafo.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_off000044ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44FF 5336 bytes
SHA-256: a185c2e9861bb4335f384e5e574589a0df665ff07c1312207b930003ed885e61
font_01_sfnt_off000056df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56DF 9612 bytes
SHA-256: ec99144d2dcbcab63ef9b8762f3ee509e2c465da6facd472fc70cf7a547d5f8e
font_02_sfnt_off000077a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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