Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a498235b4dab598…

MALICIOUS

PDF

63.6 KB Created: 2020-08-11 23:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1d5fc25584788f108f47f26062d37b5 SHA-1: 270ac57f0bdd7df255374fd4cfd4d65eeef31880 SHA-256: 9a498235b4dab598f158d7ea1dfaadb740b7bfda797d38cb2fd7e9a9d514f0e1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=navodaya+registration+form+pdf'. Additionally, it exhibits a PDF link farm heuristic, with many links hosted on 'cdn.shopify.com', suggesting an attempt to distribute malicious content or engage in SEO abuse. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the suspicious URL.

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=navodaya+registration+form+pdf
    • http://files.hypnosisworkz-sp.com/uploads/1/3/2/6/132695352/6278970.pdf
    • http://files.adandcrews.com/uploads/1/3/1/8/131860125/03e883499baf.pdf
    • http://files.aimcal.org/uploads/1/3/1/4/131453950/tutirofo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/shimano_altus_fd_m310.pdf
    • https://cdn.shopify.com/s/files/1/0449/6372/5480/files/suit_tie_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/28942474401.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/zadekozidowidef.pdf
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/73685830863.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/xipedilajakatej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1028/5983/files/ask_the_8_ball.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/god_of_war_ps4_game_guide.pdf
    • https://cdn.shopify.com/s/files/1/0454/9489/4744/files/yellow_coldplay_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/afro_cuban_rhythms_drum_set.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/35679512013.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_off00009fdc.bin
9601ccda4c0639d0691367a70d90c39c1cff8ae5f3603b1976d88ecca498629b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDC 5248 bytes
font_01_sfnt_off0000b1b6.bin
4f80666e2d644041f74b4f58f969c8a8ba80d899e9db6f1de6cc11307c916b35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B6 10864 bytes
font_02_sfnt_off0000d69c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD69C 4324 bytes
font_03_sfnt_off0000e49e.bin
ab555c29a41fcea50e824661b553bf3c59f6fbecbb8d3023f0a4a396a51f3920		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE49E 2908 bytes

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