Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d57ed97c82c01f…

MALICIOUS

PDF

33.0 KB Created: 2020-08-22 00:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45102de2c03e2182678c971caecf2d8c SHA-1: 5ea1047dbcb1b8322eb3c58ab2c148896b9fd8d4 SHA-256: 12d57ed97c82c01f4086b64b20cdb4eb6ad73038258dbb8450eca07609769c0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt disguised as a download lure. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which is used to funnel victims to malicious infrastructure.

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=aashiqui+2+mashup+ming In PDF document text
    • http://fobikuruk.culture2culture.com/uploads/1/3/0/9/130969504/xekuxi-nejuvisakuf-belij.pdfIn PDF document text
    • http://files.kkmediation.com/uploads/1/3/1/3/131383747/jigojewu_derus_vetozilulibidum.pdfIn PDF document text
    • http://files.thevictualbar.com/uploads/1/3/1/4/131438038/nekomopu.pdfIn PDF document text
    • http://files.teamrehab.uk/uploads/1/3/0/7/130739284/fabifut.pdfIn PDF document text
    • http://files.maimaiglass.com/uploads/1/3/2/8/132815365/786e8542cf7d1c.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/1/0429/6402/5493/files/daluzubona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/labinalazunojibitofosapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/44117979584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/5254745074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/66706048224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/82647065000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/28295091720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5884/0223/files/1198099735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/amelie_nothomb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5926/5188/files/texas_instruments_83_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/fexepanururofulotabajotem.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_off00004549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4549 5352 bytes
SHA-256: ab73813e9f3d7185df6e26d79947e40b513b06454c46f7eb3f8b9cec324abf56
font_01_sfnt_off0000575b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x575B 9372 bytes
SHA-256: 3278b8ed029fce4aded84dd6aca654188a70712b8bc0a3653659286935a7ec8f

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