Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e366527dc275105…

MALICIOUS

PDF

53.9 KB Created: 2020-08-01 05:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15aa5ce28e0583da3a03c27dcf127e3c SHA-1: a5f60c40a55a700a46b0f13681e52dcb00d7708a SHA-256: 2e366527dc27510521c54b3b5d16c30cb3fd1aaddb1292b3fc258da4d3308f03
152 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, but one critical link redirects through ttraff.com. This redirector is associated with malicious activity, suggesting a phishing or malware distribution attempt. The document body text, though garbled, mentions 'engineering vibration 4th edition solution manual', likely a lure to entice clicks on the malicious link.

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.com/pify?keyword=engineering+vibration+4th+edition+solution+manual
    • http://files.rolfkrahnert.com/uploads/1/3/0/7/130775806/4489846.pdf
    • http://files.americanbusinessmachines.net/uploads/1/3/2/6/132680994/ac90920224f.pdf
    • http://files.basementstopleak.com/uploads/1/3/0/7/130740142/7213479.pdf
    • http://files.sexhealthwellness.com/uploads/1/3/2/8/132814898/sedav_lebanuzuxipud.pdf
    • http://files.charlotterodenberg.com/uploads/1/3/0/7/130775551/tumopef-koxisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/30030439441.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5734/files/41721271932.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/39779075692.pdf
    • https://cdn.shopify.com/s/files/1/0435/7967/0689/files/23331506033.pdf
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/6557140967.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/35930609388.pdf
    • https://cdn.shopify.com/s/files/1/0434/9440/8352/files/dimukipomab.pdf
    • https://cdn.shopify.com/s/files/1/0437/7267/4210/files/lumexuwalix.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/semiwudix.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/9218768217.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/mp3_rocket_old_versions.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/13560406246.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/81397379021.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000737b.bin
7b9c1ad248dcaef01c7adb4df71c22141da68cde87cc5ccff7cadb2d821898f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 1768 bytes
font_01_sfnt_off00007c21.bin
b6e2cc0d84305026556426f06b72a9ed50625fd240bb228c9631a55abcdbf59b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C21 5484 bytes
font_02_sfnt_off00008eac.bin
24a89884f0c8626d8e060634eadba498e21e6bbf78edea88c0838299c0f23305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAC 10772 bytes
font_03_sfnt_off0000b394.bin
3be7dccdfc6b00c89d054627a83584a7f927f450c9e6be5692b48c67a1390cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB394 16376 bytes

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