Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e756a42741231ee…

MALICIOUS

PDF

44.2 KB Created: 2020-08-01 16:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 584766953552c5dc57b41926a696eab7 SHA-1: 387372464ec1a0b2ba2f754e6bd4ca783a0bc744 SHA-256: 8e756a42741231ee57bb6177299c8fe5e6b5207d224abeeb036fc40e577b94ee
202 Risk Score

Malware Insights

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

The PDF contains a lure for downloading PMBOK latest edition, which is a common tactic for phishing or malware distribution. It embeds numerous links, with a critical finding indicating a redirector link to traff.cc, suggesting a malicious redirection chain. The document body and heuristics confirm the presence of embedded URLs and a link farm, pointing towards a malicious workflow designed to trick users into clicking through to potentially harmful content.

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=pmbok+latest+edition+pdf+free+download In PDF document text
    • http://files.ryladistrict7255.com/uploads/1/3/2/6/132695339/tolonijuz.pdfIn PDF document text
    • http://files.vastcomtech.com/uploads/1/3/2/8/132814355/83bab572893339.pdfIn PDF document text
    • http://files.arcticbutcher.com/uploads/1/3/0/7/130775308/sojusijane.pdfIn PDF document text
    • http://files.encyclopediasonica.com/uploads/1/3/1/3/131398195/4094484.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/1/0431/6397/5835/files/37568583818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/xuwokafenuvowexubomado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/50142202215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/35088907569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/xojalolub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/75557827348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/fiweriweleri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1461/8262/files/tomezudulunuwojasapef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F20 5272 bytes
SHA-256: 72023b766f08a167d0fb62c4d42dd109101a6a5ff8a8eabdd9912525a6633497
font_01_sfnt_off000070f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3 10908 bytes
SHA-256: 1b87cfac1eee063436d69ce33aec4d5ebdc6228cd983fb0bd8f03685377c386e
font_02_sfnt_off00009600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9600 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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