Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d4e47529f66059…

MALICIOUS

PDF

49.0 KB Created: 2020-08-28 09:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b968f67dc12bc720f05ea4e4d1638b1d SHA-1: 135c7264418a3aeb3afcab9513db75f6718acf1b SHA-256: 31d4e47529f660596c708ea20bda36fa06174977f74794437f7a726811f9780b
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The document body contains obfuscated text and a URL that points to a redirector service. This suggests a phishing or social engineering attack to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adobe+reader+offline+installer+xp In PDF document text
    • http://files.conniehardyreflexology.com/uploads/1/3/1/4/131453944/bokokolubeme_zidigeloja_xagozen.pdfIn PDF document text
    • http://files.caringheartsunited.com/uploads/1/3/1/6/131637024/jazisotu_dobulu.pdfIn PDF document text
    • http://files.knittygrittysyr.com/uploads/1/3/0/7/130776295/berajobowapato.pdfIn PDF document text
    • http://fiwuli.advancedmodularmanikin.com/uploads/1/3/1/0/131071252/a8aea93f.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/1/0431/4457/7185/files/personal_finance_jeff_madura_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/nifulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/zofituz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/35519671289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/rifoxuruwuvugog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/sisuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/wurewasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/3312834803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4397/0463/files/tulazakuzitiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6138/6147/files/53744334217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/68496689625.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 6

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_off000074a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A8 5020 bytes
SHA-256: 8024a9ab02cb95e258631f9fcaa7d2ab8452453c882eb364f4458c68eda5a803
font_01_sfnt_off000085bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BB 10180 bytes
SHA-256: 40772d6c4b3d1b46e8dadaca1cc1d7ab856ed4b6449fa055b851f71e9ded86ae
font_02_sfnt_off0000a895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA895 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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