Malicious PDF — malware analysis report

Static analysis result for SHA-256 07579fd352187590…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 05:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7e0a26e8d6c340d72c5818076b4e73c SHA-1: 3523fb4c72c3fb10cd96e4627949deffe6973c01 SHA-256: 07579fd352187590178ebed266600f236288576048d89ae6b60e8e3ea6399ca8
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a game download, which is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to host numerous links, likely for SEO poisoning or to spread malicious content. No scripts were extracted, but the presence of embedded URLs and the redirector link points to a malicious intent to redirect users to harmful 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=asphalt+8+java+game++128x160
    • http://files.rockclimbingprogear.com/uploads/1/3/1/4/131406258/ecf3c9ca7d47.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/pisanewijoxixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/movikulewerudazuxedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7301/9797/files/new_bollywood_movies_hd_filmyzilla.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3356/files/come_together_chords.pdf
    • https://cdn.shopify.com/s/files/1/0439/3716/9576/files/bogusalirapefewo.pdf
    • https://cdn.shopify.com/s/files/1/0452/5611/4337/files/uc_browser_fast_apk_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0440/5487/2214/files/pawosupobatil.pdf
    • https://cdn.shopify.com/s/files/1/0429/8149/0847/files/bleeding_steel_movie_free_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/jawubaxoguruz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1475/7288/files/42490101336.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/floor_paint_lowes.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3239/files/serekugemeje.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a19.bin
33483d1fece831390de82ae077caf73cd599c7754f529af5e5d16b5c5ddd3ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A19 5528 bytes
font_01_sfnt_off00006d02.bin
0bd194666012362e540eba06f5f712a7b3279966e44aa30bb290a26a1043ccfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D02 12076 bytes
font_02_sfnt_off00009440.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9440 4324 bytes

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