Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb9578980d0f6fe8…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 22:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 318d3444759831dc6c13f9ec554e193a SHA-1: 005e6dfc94f8345565b97e264c2192090821eb64 SHA-256: bb9578980d0f6fe810fc2c9a7f515f7b11bae2334a366187968de6158fc68d71
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'Project performance assessment report'. This link points to 'https://ttraff.cc/pify?keyword=project+performance+assessment+report', which is known to lead to malicious infrastructure. The document also contains a large number of external PDF links, many of which are hosted on Shopify, suggesting a link farm or SEO abuse tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=project+performance+assessment+report
    • http://files.dekinderenhuis.com/uploads/1/3/0/7/130775350/6815579.pdf
    • http://xunut.startherup.org/uploads/1/3/2/6/132695569/82de690b10ec7.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/basic_pronunciation_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7645/files/barycentre_exercices_corrigs_seconde.pdf
    • https://cdn.shopify.com/s/files/1/0433/3476/2664/files/443856616.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/80383163531.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/hansel_and_gretel_short_story.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/rexidegujavekowowapukama.pdf
    • https://cdn.shopify.com/s/files/1/0439/2586/4603/files/appendages_of_the_skin.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/jivavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/domiwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7256/files/15453506626.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/clinical_ocular_pharmacology_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0450/9820/5349/files/application_of_computer_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/73863207972.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2031/files/3318568345.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000549f.bin
22190ce98267cd105ca167adfc0d72952d9e7dbcdcf94ef5ce7023d04bae8b88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x549F 4944 bytes
font_01_sfnt_off0000654d.bin
78a92ab1ec44e4ddc2ad557dd52577e565e2ab63795f110986becc0f4b215156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654D 9908 bytes
font_02_sfnt_off0000873e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873E 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.