Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c36a51e16a22ae…

MALICIOUS

PDF

41.8 KB Created: 2020-08-23 09:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0878cf59ee72e10f3acf979b7f64f1f2 SHA-1: 17dc7de8c431a41621a5002bd8ea642951d5e58e SHA-256: e9c36a51e16a22aeec40d9d25db9b1c37b8d01bfd265d16be49c6e0fff6c3f2a
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one identified by the heuristic. This suggests the primary intent is to redirect the user to a malicious site, likely 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=ap+chem+chromatography+lab+answers
    • http://files.thenookdcp.com/uploads/1/3/0/8/130873855/7777153.pdf
    • http://files.thebetterbrasspipe.com/uploads/1/3/2/7/132740218/daf3e1d8396c143.pdf
    • http://ruzud.digitaleducationinstitute.info/uploads/1/3/1/6/131606056/7a01328fe.pdf
    • http://duputuz.akchristiantraining.com/uploads/1/3/1/0/131069992/6592004.pdf
    • http://files.bozemanhelpcenter.org/uploads/1/3/1/4/131437873/zipipovalum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/windows_7_build_7601_not_genuine.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/logo_quiz_world_level_4_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0700/files/5920127067.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/82589751264.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/nubuvadelobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8759/files/75024694555.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/chopin_aeolian_harp_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/xikunumaxesowul.pdf
    • https://cdn.shopify.com/s/files/1/0451/2425/5898/files/aparato_digestivo_anatomia_y_fisiologia.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/
    • https://cdn.shopify.com/s/files/1/0433/8135/8759/files/75

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062c4.bin
0e10ceacaa3c8b95f47f437a0f532097910c10101b018f30ae149850bf5e4b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 5672 bytes
font_01_sfnt_off000075f4.bin
2f6d2a06027a81ee64b53470ce6c99380355eaa9a9fbc23e50fb01a27e84cd50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F4 10548 bytes

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