Malicious PDF — malware analysis report

Static analysis result for SHA-256 c16beafbdc2a4322…

MALICIOUS

PDF

45.3 KB Created: 2020-08-10 21:20:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24e0a11d56e0f6749acfb1691b61fd65 SHA-1: 7cf36940f2963ea486ba8bf5445fc4ec350872c2 SHA-256: c16beafbdc2a432225f79ee60cd384208b437d81f62a2b6a3cb62dd51c438ee5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=flower+of+life+sacred+geometry+pdf'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, suggesting an attempt to obscure the true malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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=flower+of+life+sacred+geometry+pdf
    • http://files.michiganskymedia.com/uploads/1/3/1/4/131406395/labup.pdf
    • http://runukolod.damnearlakeofegyptcabins.com/uploads/1/3/0/7/130775350/2e70634dbf3d.pdf
    • http://files.kmphotographyma.com/uploads/1/3/1/4/131407165/1126974.pdf
    • http://jokep.hcsatl.com/uploads/1/3/1/3/131381204/8363595.pdf
    • http://files.kmphotographyma.com
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/sap_implementation_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/75300039797.pdf
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/50747772401.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/gipawomupab.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/14863205490.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40313354442.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/lelutuga.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/wejesifawunemalip.pdf
    • https://cdn.shopify.com/s/files/1/0436/1686/2371/files/xitifokuwutuzanelisetop.pdf
    • https://cdn.shopify.com/s/files/1/0435/1374/1471/files/22977729630.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/learn_java_programming_in_urdu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fb6.bin
20e2741944b9889f4affbbd2046cdb1416a826b2f026ab5348d0d680b5583ad5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB6 5624 bytes
font_01_sfnt_off000082e1.bin
aea421bdc0f11ebff6050d7261b7624f1879ff3412b0303d320f2c3981606754
pdf-font-stream PDF embedded font (sfnt) at offset 0x82E1 10484 bytes