Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4b72b60e63c1b9…

MALICIOUS

PDF

45.2 KB Created: 2020-08-19 01:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9824e692aa0d42a66edff1fc0adde37 SHA-1: 35b2f572766ed1cd86c7790864dec65f175d42e2 SHA-256: 7d4b72b60e63c1b9579bf54bcb63975519a86541a8e9270ad593b421098d152c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to an SEO redirector service (ttraff.com) that ultimately leads to phishing content, as indicated by the 'carprog manual airbag' keyword. The ML classifier strongly suggests maliciousness, and the presence of embedded URLs confirms the intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure.

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.com/pify?keyword=carprog+manual+airbag In PDF document text
    • http://pivaf.sheltermusicboston.org/uploads/1/3/0/7/130739655/nipafenetiverigedogi.pdfIn PDF document text
    • http://files.concordiachristianacademy.com/uploads/1/3/1/4/131454692/e7800f3ea96.pdfIn PDF document text
    • http://ludolor.kwikwashlaundromat.com/uploads/1/3/0/8/130814328/cc2068d.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/1/0433/3414/0072/files/76144696624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/fishing_report_upper_colorado_river.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4746/5639/files/bravura_march.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/xudiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/envision_math_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/89519589316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/zopogonupila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/mathematical_methods_physicists_arfken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/arduino_projects_for_ham_radio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7102/6853/files/asce_7_05.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/doterra_aroma_lite_diffuser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/meluvelubofenobosezid.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_off00004c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7A 4808 bytes
SHA-256: b32dc56672caba5da99b9a5661e6a41cf24b802095db0dfbfc6adfe42eb4d79f
font_01_sfnt_off00005ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA2 12236 bytes
SHA-256: b6a9fe866af1de5489b09b055af0bdcd3ec4ca2bb6d0f817152c1c9c9148f0e9
font_02_sfnt_off00008435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8435 16220 bytes
SHA-256: 288645b9b601f5e921a8eb443df0aeb1d6335bcfaefe0ae4725cc0adef041b85
font_03_sfnt_off0000998d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x998D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3