Malicious PDF — malware analysis report

Static analysis result for SHA-256 504403857c378b5f…

MALICIOUS

PDF

74.9 KB Created: 2020-08-10 00:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e09fbba3a44109cbd6a1c9240ca0a790 SHA-1: 640de9a06a38e665e54b3c4e9ab6c2f1134c50d8 SHA-256: 504403857c378b5f345b386620748beec0eb8e411e40847dc807f06d0a4d7612
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The embedded URL 'https://ttraff.cc/pify?keyword=handball+score+sheet+pdf+ihf' is a clear indicator of malicious intent, likely leading to a phishing page or malware download. The presence of numerous external PDF links, including one hosted on Shopify, suggests an attempt to appear legitimate while distributing malicious 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=handball+score+sheet+pdf+ihf
    • http://files.prosplanning.com/uploads/1/3/1/3/131379506/8117171.pdf
    • http://files.computerscpr.com/uploads/1/3/2/7/132740860/xubujolodosetejokuv.pdf
    • http://files.akws.org/uploads/1/3/1/3/131398367/wujagizixofipi-rakik-kenafanokuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/60527817319.pdf
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/zegifusabegame.pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/kebocode_com_gift.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/closers_survival_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/kogesazona.pdf
    • https://cdn.shopify.com/s/files/1/0437/0835/0619/files/english_conjunction_words_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/5406/4028/files/20751310373.pdf
    • https://cdn.shopify.com/s/files/1/0449/2250/3323/files/capes_qualis.pdf
    • https://cdn.shopify.com/s/files/1/0434/4519/0821/files/4836213713.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/mamekexobamavexegu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/8316241211.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbaf.bin
53c0a194b748983994aa3e3c87cf04133f4f3e11036c785397883cff4a01eca7
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAF 5132 bytes
font_01_sfnt_off0000ed05.bin
bcb0bbca57c5179b432baf2176ad78f83b1badde0334ef61aa4fd2e59cccafa7
pdf-font-stream PDF embedded font (sfnt) at offset 0xED05 10372 bytes
font_02_sfnt_off00011068.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x11068 4324 bytes