Malicious PDF — malware analysis report

Static analysis result for SHA-256 005004314ecd0e04…

MALICIOUS

PDF

84.1 KB Created: 2020-08-06 21:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01016fbcd26de09fa3f419199f8fe135 SHA-1: 338d75d7ee8ae61df4d767df0777b8366359e70d SHA-256: 005004314ecd0e045155a4cecd5c4b73ff71232cf5d49f4d07ac96c886f78085
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.ru/pify?keyword=arduino+bluetooth+module+tutorial+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to Arduino tutorials, suggesting a lure to disguise the malicious link. The ML classifier 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.ru/pify?keyword=arduino+bluetooth+module+tutorial+pdf
    • http://files.zeldenrustfarmmarket.com/uploads/1/3/1/8/131856039/voxofufe.pdf
    • http://files.aleksanderlidtke.com/uploads/1/3/2/3/132302868/mavotuvir.pdf
    • http://sawudag.literarypubcrawl.com/uploads/1/3/1/8/131856743/babupexiter-vudizamuwezamax-xogoxokaj-lefezotigijo.pdf
    • http://files.rayvik.com/uploads/1/3/0/8/130814065/fee140733cab3a.pdf
    • http://files.johannaparkhurst.com/uploads/1/3/0/7/130740011/6665601.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/setoxas.pdf
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/tamonilu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/xonefevaposapiwemewoxux.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/31575481387.pdf
    • https://cdn.shopify.com/s/files/1/0437/3830/0568/files/98717328236.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5456/files/5352448037.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/92687701923.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/wefebanuzilifig.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/fesufatabiwexisabejupisa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7619/0361/files/29402773977.pdf
    • https://cdn.shopify.com/s/files/1/0433/6707/1894/files/gimilitevoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8144/0168/files/75443501621.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f9e.bin
cc95b235e919b0bce29ba3d0cb318d7d7bb881be4b28a9b2b8b239dbf5c3c294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9E 5232 bytes
font_01_sfnt_off00012134.bin
6f8ab365059a03731476809770161c221343d9b3e1ad597c46ccf701ab5b49de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12134 9932 bytes

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