Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b456f3518271a0d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-08 00:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37aaaedaa075bfe5d559cf96ebc219e9 SHA-1: 060cac6d9172349020aae2e38e529a5a7439ac33 SHA-256: 5b456f3518271a0db01ce733932b33c79495837f859bdc6a705819a21b27e752
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, suggesting an attempt to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the URL and keywords that appear to be part of an SEO spam or phishing lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=effective+public+relations+8th+edition+pdf
    • http://files.perfectbreakcaravans.com/uploads/1/3/2/7/132740270/zenari_tiranibapo_wukilepanese_kedafamowugiwom.pdf
    • http://fujatugut.svfmcoalition.org/uploads/1/3/0/7/130775768/nozazoj.pdf
    • http://files.charaliliana.com/uploads/1/3/1/3/131383318/226648.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/lesamub.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/95215094606.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/nuzuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/44125198073.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/gadarisi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/57804402975.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/rosujepifowonerezamanele.pdf
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/84260437190.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/johnson_70_hp_outboard_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/solaris_11_administration_guide.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_off00006201.bin
7ad94b508905310856dff4180ac81c5756d758f44afd0e0af23a50bda8bcce8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6201 5476 bytes
font_01_sfnt_off0000748e.bin
6ae80576d96ef22ed6970b63864e0aa4250ca77adf7ce9e6e2bd5d67c014c121		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748E 10584 bytes
font_02_sfnt_off000098b5.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98B5 4324 bytes

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