Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d150ee2308d805…

MALICIOUS

PDF

41.6 KB Created: 2020-08-14 05:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c20b3ac3709acbd49ef97c656d5c309f SHA-1: b43dfc6329db8e3cbe64fadaf49dc3930a4b493b SHA-256: 87d150ee2308d80566aac28ee880538d454d1ff958bc793841e658571af301d3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to distribute further malware or conduct phishing. The document body, though heavily obfuscated, contains text related to sheet music and the URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to Shopify, which is a common tactic for SEO poisoning to drive traffic to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=lds+primary+song+gethsemane+sheet+music
    • http://luliz.primrosehillevents.com/uploads/1/3/1/3/131379578/wijapagu-sudogu.pdf
    • http://files.northhamptonvfd.org/uploads/1/3/2/7/132711970/zegumabenijivap.pdf
    • http://jazelik.kitchendesigncenters.net/uploads/1/3/1/0/131069839/6f5209f94653a7.pdf
    • http://files.laurakwright.com/uploads/1/3/1/4/131455621/9693259.pdf
    • http://files.netherlandsandcoloniesrevenues.com/uploads/1/3/0/8/130814172/54c6c.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/83212603834.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6245/files/86024203379.pdf
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/7065332357.pdf
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/doripafimorakagekis.pdf
    • https://cdn.shopify.com/s/files/1/0429/4112/0679/files/landlord_reference_letter.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/tumilobib.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/tuvijiwix.pdf
    • https://cdn.shopify.com/s/files/1/0437/9518/5824/files/fesufidaparazumisor.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7779/files/93873850831.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77084518355.pdf
    • https://cdn.shopify.com/s/files/1/0433/7978/5886/files/environmental_tech_void_miner.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/fatinagezativajoxab.pdf
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/c_language_for_beginners_free_download.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/
    • https://cdn.shopify.com/s/files/1/0436/47

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055cd.bin
521cb35d1a943c83b8caed8c03449f106f86d937cbab82e05e14d5c2fdb3f5c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55CD 5380 bytes
font_01_sfnt_off000067f6.bin
2a056e48adb24ea9c14482477e64ce84eede88c7fe3d0ef5c3d1093b1b0c05e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F6 10172 bytes
font_02_sfnt_off00008aac.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAC 4324 bytes

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