Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c35a0c41b6c488…

MALICIOUS

PDF

54.4 KB Created: 2020-08-10 20:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2475bcd9d572af7f6328437f338f3d6 SHA-1: 47c013f6b27ceb424d3f777012a6ad1026aed425 SHA-256: 42c35a0c41b6c48868255347bec1e4ce15b036db180a01faecd62dc726ca442e
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating that at least one link points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Oracle administration workshop 2 pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links further supports the SEO link farm heuristic, indicating an attempt to manipulate search results or distribute content through a network of sites.

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=oracle+administration+workshop+2+pdf
    • http://files.washingtonactivities.com/uploads/1/3/0/9/130969206/8540930.pdf
    • http://files.lasalleyouth.ca/uploads/1/3/1/4/131483143/2fa3df00a19b910.pdf
    • http://begepe.cpasgc.com/uploads/1/3/0/7/130776485/jobijoka-wuwepak-warar.pdf
    • https://cdn.shopify.com/s/files/1/0429/9420/4825/files/58757162074.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0220/files/85413714894.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8374/files/jivasufivekokokipipad.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/i_m_yours_ukulele_chords.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/costco_membership_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/adobe_trial_expired_reset.pdf
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/44851826976.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/sidobuwupalikaxutikax.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/converter_para_word_i_love.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/47534192502.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/xuwavojosevejulorepukum.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_off00006dcb.bin
2aedc713e7d86384c647fb37874dfd63d027ef7ff3d22ba76507e2ddd0e8b675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCB 5708 bytes
font_01_sfnt_off00008119.bin
7f1fc89d230b21cdf1c6da576e651cd8d1038c1fc087e797b2b55c3b3618ee60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8119 1852 bytes
font_02_sfnt_off000089ee.bin
ac0dec60021277e941578d17903ceacf2d56260421403cf5457172ecb62f5f9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89EE 14192 bytes
font_03_sfnt_off0000b6ea.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6EA 16204 bytes

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