Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12c1dd013e9cf54…

MALICIOUS

PDF

41.5 KB Created: 2020-08-05 01:36:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: befe446b74deac0a9823da1783a981ee SHA-1: ae3d075fa6b7448565b58d7167d9cb7f22d063ab SHA-256: f12c1dd013e9cf54ee1faf5e42c61fe27abbc7feb72d8b0c480c0f8d8f2ecade
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'printable blank monthly calendar pdf' and the malicious URL. This suggests a social engineering tactic to trick users into clicking the link, which then leads to malicious infrastructure. No scripts were extracted, and the primary malicious activity is link redirection.

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=printable+blank+monthly+calendar+pdf In PDF document text
    • http://kafix.mirrorpayroll.net/uploads/1/3/0/8/130814328/9527453.pdfIn PDF document text
    • http://files.kayecameron.com/uploads/1/3/2/6/132681969/19a9ef427d85.pdfIn PDF document text
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.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/1/0438/0930/8829/files/18920671525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/30907635199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/43522640114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/66623765027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/bobujizurev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4152/0805/files/suxetokosusudir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/79539918706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/mowagakesipej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/tidijixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/73472449164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/kali_linux_installation_guide.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 8

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_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 5524 bytes
SHA-256: 7e77f8cd1fe6a9f0a8285156c6d5f959cdb657d565322e648e5d798a835d8106
font_01_sfnt_off000076e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E6 10080 bytes
SHA-256: 874450676efb21cbcb3d8acb41575ec9a3fbc8af2f2fae13be419ea60da3890c

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