Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aade7a8109566f5…

MALICIOUS

PDF

40.6 KB Created: 2020-08-02 04:38:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e348d09583cf99fb109830e761570d83 SHA-1: c4379292955379fd70df8b20236745beaf3053e5 SHA-256: 1aade7a8109566f5b8ce699050ac1ccc515e75816745361db813b999909a9230
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to reference a '2017 dodge caravan owner's manual' and includes the malicious URL, suggesting a lure to trick users into clicking. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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.cc/pify?keyword=2017+dodge+caravan+owner%2527+s+manual
    • http://files.wowvt.com/uploads/1/3/1/8/131856743/gojenajolojefipapi.pdf
    • http://files.anrs.ca/uploads/1/3/1/6/131606059/1334997.pdf
    • http://files.michael-sloan-equalizer.com/uploads/1/3/0/8/130814085/82d5c8a2c0a4d67.pdf
    • http://files.mccarthyphotography.ie/uploads/1/3/1/6/131637240/1430911.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/rubigiporaset.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/52491481419.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/xafamijewobosativedatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/lipatoke.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/guriluwurukikodazuxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/fanidenofufitoxezagut.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/wivimijukadokip.pdf
    • https://cdn.shopify.com/s/files/1/0433/4203/7150/files/stuffit_expander_windows.pdf
    • https://cdn.shopify.com/s/files/1/0438/7618/8315/files/65909480869.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/95100438674.pdf
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/62539695870.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_off00005de4.bin
87577cc17ee351f4fd89ec2adfad06b91b1f8816b976900a129aba45a069c932
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE4 5756 bytes
font_01_sfnt_off00007187.bin
6e5a16a1d910d1802fce911af6eb5f1d23b5f13c555caf2fd3390631fe4fc10c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7187 10560 bytes