Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1205b0fe6c7a03…

MALICIOUS

PDF

36.6 KB Created: 2020-08-15 03:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 750241e6b261f4ea5f8e0bb3bc11c6d0 SHA-1: 1f9917ff82caf4810cff50853a1e22427db81f89 SHA-256: ef1205b0fe6c7a030c6106843bf4c6c17b1555e5fdd3c9ac59bda7f74e59d810
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=atecnica+mx3+pdf, which likely serves as a lure to a phishing or malware distribution site. The document body contains garbled text but includes the malicious URL and several other PDF links, suggesting a link farm for SEO poisoning or to obscure the malicious destination.

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=atecnica+mx3+pdf In PDF document text
    • http://files.joanridsdel.com/uploads/1/3/1/3/131380773/mesexezajiz_waxag_zowejufafere.pdfIn PDF document text
    • http://files.mbapierce-rex.com/uploads/1/3/1/3/131384121/613366.pdfIn PDF document text
    • http://files.cdietconnections.com/uploads/1/3/1/4/131483153/luwis.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/1/0437/7139/6257/files/bujitusufalufepodusinorer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/68339373700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/xetobaxaxif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/5428506993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/23388393974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/anthocyanin_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/18988190534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7279/6310/files/jajulorif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/fawejuzera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8973/0472/files/jodute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/pamapufabaxepejebomika.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_off000051b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51B4 5216 bytes
SHA-256: 0fc06233d3a2b7b09f2d595ade15f167c01b223630055a9395f53172cd5369c5
font_01_sfnt_off00006365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 10096 bytes
SHA-256: e63c3b70d1fdfc37277d8a2c02b076743983523591caa93517f7990d4121ca05

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