Malicious PDF — malware analysis report

Static analysis result for SHA-256 60704f4b238c0424…

MALICIOUS

PDF

54.4 KB Created: 2020-07-29 19:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e3845df06f786985a4ab1902b8ff674 SHA-1: fbb3324332b88de0db8be56f14c9e9ed03ed51ef SHA-256: 60704f4b238c0424579b43e79b79daaef562b8ed571c7fd7cdba1036d348f4f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. It also exhibits a PDF link farm heuristic, indicating a large number of external PDF links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of malicious redirector links suggests an attempt to lead the user to harmful content, potentially for phishing or malware distribution.

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=makalah+askep+abortus+pdf
    • http://files.shopscarletgypsies.com/uploads/1/3/2/6/132681698/6065207.pdf
    • http://files.patmedmun.com/uploads/1/3/1/3/131379792/zidolirevipomiweziji.pdf
    • http://files.jpicac.org/uploads/1/3/1/4/131408432/wolororo_lugerakip_xitijigad_nemon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/49386457506.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/todalevisilusid.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/69321505506.pdf
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/72544185422.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/vavamiwabozisanezadigan.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/79040229565.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78578063821.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/dawaxafedutitepexa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/bifofugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8221/0725/files/tutisijirumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2918/files/dusuxaxojavonodazalivozus.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_off000098e4.bin
f8bb7d0fe2124af9c2501187b66fa5adf60081489e45c95d38944d725342b86c
pdf-font-stream PDF embedded font (sfnt) at offset 0x98E4 5064 bytes
font_01_sfnt_off0000aa24.bin
a4054b188a22f0760f4a28f0f174ed88ea7b0b0c3acd8142c1e09b094af9b355
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA24 10100 bytes