Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e984cc7ac469819…

MALICIOUS

PDF

38.1 KB Created: 2020-08-06 09:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2671086b7b08c7097bdd829bfc0159dd SHA-1: aa2c0a7bd5adb10d5299d959237b4daf6d31e06c SHA-256: 4e984cc7ac469819d875911f6639b09eceaeae189136d6f5e95487f8769c2ca9
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to an APC UPS and a URL that appears to be a redirector. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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=apc+smart+ups+srt+10000va+230v+pdf
    • http://files.sammie-smith.com/uploads/1/3/0/8/130874501/zitugif.pdf
    • http://files.yarmouthportlibrary.org/uploads/1/3/0/7/130776602/wizizomedib-sugodafafu-befakaragev-dikomapevomek.pdf
    • http://files.jaredjaggers.com/uploads/1/3/1/4/131453111/susezotuwimut_vanela_babokejite.pdf
    • http://files.toledopresbyterian.com/uploads/1/3/1/3/131379792/girolazabavakew.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/nekanepofuzujasetoga.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/ctet_ans_key_july_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0428/4334/0956/files/xijoxumijudamuriwafajon.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/zezox.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4204/files/d_d_monster_manual_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0437/7018/3831/files/vukidutadazanelosez.pdf
    • https://cdn.shopify.com/s/files/1/0438/0826/0258/files/siravujosexomigopuwot.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/45867155260.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/wijev.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/sofel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojezurin.pdf
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/bifineneruzomu.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_off00005647.bin
8c7e34c906c4bfcbe84cb1ba032c87f1649b8e79404058914f4ecd49a8da7427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5647 5808 bytes
font_01_sfnt_off00006a03.bin
7074bbe02d6aead7ee54c282dbcdc4573b07ae490fbe052d961fa35bbdb93616		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 9900 bytes

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