Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d2c237e88dac7a…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 19:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 733b23a4e144d1f451f2dcdec16889a6 SHA-1: 49188314ef5a56300532b40674e746afd14e89e9 SHA-256: c9d2c237e88dac7aceb6af3f39d95e6a5cd677f02afa13d23df4a00563f22787
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=blender+materials+guide', is flagged as a malicious redirector. This suggests the document's purpose is to lure users through a series of redirects to a malicious destination. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

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=blender+materials+guide In PDF document text
    • http://files.creeksideband.com/uploads/1/3/1/3/131384789/3301404.pdfIn PDF document text
    • http://files.shaikheskander.com/uploads/1/3/1/4/131437313/ragevusi.pdfIn PDF document text
    • http://files.blairstownpubliclibrary.com/uploads/1/3/0/7/130738562/c155ff1.pdfIn PDF document text
    • http://files.mkrishnan.com/uploads/1/3/2/3/132302963/lizewenaxero-zozarinipovefu-josapo.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/1/0427/9923/5228/files/27439265228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/rumuzebemogosunerosap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/bazaxuxatesetasimiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/53688413131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8667/6135/files/mastering_bitcoin_andreas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/fitamivarunogukewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/jarixupudanenokevinil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/panewimasonixeduwuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5230/files/85212528302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/89483607436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4279/8757/files/15563007059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/bilanzgewinn_berechnen_formel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9292/5852/files/capabilities_and_limitations_of_a_computer.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7127 5192 bytes
SHA-256: a402bd8d136cb94cc142a71af7f08753a3f8eff6aec0823a072814ae8af20e28
font_01_sfnt_off000082b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B0 10684 bytes
SHA-256: 8e7fa9de71a87dba64fab569277d0a77a6521e7937a4fadeef96f0b54ba8ddd2