Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ed46b480862283…

MALICIOUS

PDF

37.9 KB Created: 2020-08-06 20:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad0ae577508fb886e25c4100e09c68ce SHA-1: 65301a46c0865ecebdf448f1c58dfc94c0c38a1d SHA-256: 00ed46b480862283021fbcaaff1ec45c3ed4bf41121ebe675f5b0432b8e03977
194 Risk Score

Malware Insights

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

The PDF contains multiple links to external resources, including a critical redirector at 'https://ttraff.ru/pify?keyword=the+data+warehouse+etl+toolkit+pdf+download'. This infrastructure is flagged as malicious and part of a link farm, indicating a coordinated effort to distribute malicious content. The ML classifier also strongly indicated maliciousness. The presence of numerous PDF links, many pointing to Shopify domains, suggests an attempt to disguise malicious links within a seemingly legitimate context, likely for SEO poisoning or phishing.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=the+data+warehouse+etl+toolkit+pdf+download
    • http://nedujuvek.rheumatoidarthritishealingnaturally.com/uploads/1/3/0/7/130739415/ff23a557175a3.pdf
    • http://files.beautifulmessshop.com/uploads/1/3/2/6/132680922/1353796.pdf
    • http://files.pregnancyparentingboulder.com/uploads/1/3/1/4/131407698/ecf5386e5431653.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/gipexuxodijutena.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/59775653018.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/61231965301.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/8827725727.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/rutiritoxexofaripadububi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/54910902965.pdf
    • https://cdn.shopify.com/s/files/1/0432/2544/8615/files/scratch_ile_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/25196976798.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/25388055003.pdf
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/jokewusakumoduvuxuwuxas.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055cc.bin
6ad87440508154407057c3ce300824233b69741c7b4555f6d1b9d755b0a374fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55CC 5236 bytes
font_01_sfnt_off000067a5.bin
1bfb365c6ce5d26758fc6b953ff8d53e371646439358cd36a85751bdcf87424c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A5 10312 bytes

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