Malicious PDF — malware analysis report

Static analysis result for SHA-256 2978dddd81dfd325…

MALICIOUS

PDF

51.6 KB Created: 2020-08-16 17:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5989d9f3ddfb280f0e5775fe08109108 SHA-1: d7c6494760f05bf6997665532a9e57dbaacab2b7 SHA-256: 2978dddd81dfd32524b67f403f5330ce170280b8d4977a21e4c14b8e47a76b54
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.cc/pify?keyword=application%252F+x-+www-+form-+urlencoded+c+example, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, with cdn.shopify.com being a dominant host, suggesting an attempt to obscure the true destination or engage in link farming. The document body contains garbled text and the suspicious URL, reinforcing the malicious intent.

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=application%252F+x-+www-+form-+urlencoded+c+example In PDF document text
    • http://files.12chemistry.com/uploads/1/3/1/4/131437660/befud_xozipowu.pdfIn PDF document text
    • http://files.cooperartfulhealing.com/uploads/1/3/1/3/131398091/bumevepulalaxo.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/1/0437/7218/2685/files/varupavis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/52639864163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/pentair_intelliflo_variable_speed_pump_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/49671662122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/stay_hungry_stay_foolish_by_rashmi_bansal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/63571535624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/80505779917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/nawedewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/acidosis_metabolica_neonatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0105/2310/files/71529815556.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E18 5340 bytes
SHA-256: a26328142e3c00d8d68559a344bc005c382d84eb388d1b1058921b4209fac93d
font_01_sfnt_off0000703e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 2640 bytes
SHA-256: 9a9fd7f62658fafddbc1c885ac7b93aeefab274ba5eecc50eb572843d7299d13
font_02_sfnt_off00007bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCD 15260 bytes
SHA-256: e4392c3c13f18c42617292b65db816b122d7ddf0da60a53ffa36ab9abcd8181a
font_03_sfnt_off0000abd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABD5 16168 bytes
SHA-256: bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86