Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e71a72e3c008cf…

MALICIOUS

PDF

47.4 KB Created: 2020-08-20 20:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33e30b7668ce07d8f7d817d5bbc0f243 SHA-1: f5455bc30f1b569cd525255fded3239a9a603433 SHA-256: 31e71a72e3c008cf7e162eec0515816a5e66852e09d359cbc5c2d576ce5de533
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests it is disguised as an 'annual report' to entice users to click the malicious link. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. 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.com/pify?keyword=ballingsl%25C3%25B6v+international+annual+report In PDF document text
    • http://files.jonimurphyartist.com/uploads/1/3/1/8/131872048/zunidogoxub.pdfIn PDF document text
    • http://files.galleherlumber.com/uploads/1/3/1/3/131379439/wamev.pdfIn PDF document text
    • http://files.stopabully.ca/uploads/1/3/1/8/131871569/7949dc6.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/1/0433/4557/6088/files/zegowepozemolipusedefuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76685421079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6523/5866/files/21525222771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/zixemiposejigub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/42691963578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/bukuneluwoxuwute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/51120397117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/technical_stock_analysis_bollinger_bands_and_rsi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/csuf_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4886/7739/files/somez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/44608431872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6483/5737/files/lepuvenij.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 5

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_off00006bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB8 5116 bytes
SHA-256: 56ec1ec802779e2f6a494e28d7d31e823ec829d4e9ebc741be0130b723680d07
font_01_sfnt_off00007cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF2 10440 bytes
SHA-256: 1e12bd8b386334df0740a13fdedf0d06b6e63cb7de99ddd571a93923ac9b994c
font_02_sfnt_off0000a056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA056 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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