Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c4693d94c4830de…

MALICIOUS

PDF

47.3 KB Created: 2020-08-01 04:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b193fbda83d30a2d0808fefa2088e796 SHA-1: 2f77ee5ba8acdf3185a3c856f5984673b63415e8 SHA-256: 0c4693d94c4830de26d9a0fb80be964587a3b4bfd90ea924a2d0ecae3c885acb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirector infrastructure. The primary redirector URL is `https://ttraff.cc/pify?keyword=convert+a+publisher+file+to+pdf`, which is flagged as malicious. This suggests a phishing or scam attempt using a link farm to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness.

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=convert+a+publisher+file+to+pdf In PDF document text
    • http://files.christinamarshalllmt.com/uploads/1/3/1/4/131406537/1768102.pdfIn PDF document text
    • http://files.lindisfarne.org.nz/uploads/1/3/1/3/131380316/9374b9991d5.pdfIn PDF document text
    • http://files.huckleecology.com/uploads/1/3/1/6/131606486/c0a66ffe1b575.pdfIn PDF document text
    • http://files.baldmannhumans.com/uploads/1/3/1/4/131438759/3870645.pdfIn PDF document text
    • http://files.stockbridgerobotics.com/uploads/1/3/1/1/131163736/ziwirarotekes_junapenowokumo_begomobevexaw.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/1/0429/1729/8329/files/fagaliwopejeletipopoxatit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/74475977106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/tujimorodef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/60313265040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/tufexipemofewumafotexuxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/xevarokib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/mexevenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/wikox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/89991944715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/bazurejowejomag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/wiwamuzemolusazovirokivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/80638769471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000659f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659F 5232 bytes
SHA-256: a264c366edb6948ed8b910bfbb31c5e7e5ad248cd042968a178ccb49f2105a07
font_01_sfnt_off0000775e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 10364 bytes
SHA-256: 7b869df90eb58ce41f97e7434b35cb9fa9fbb411a5e5a0b67b1814c127846217
font_02_sfnt_off00009afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFB 16076 bytes
SHA-256: c497e7020956884876526f9a9d0138e4369f5c46b3391b62f16f330352c2bc8d