Malicious PDF — malware analysis report

Static analysis result for SHA-256 673cd6c1acd37cfb…

MALICIOUS

PDF

52.3 KB Created: 2020-08-17 08:37:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c07cb56dc0e6230b84f916996c1ab78 SHA-1: 111ff13c95aeede5554588b2f511f4c85e81c690 SHA-256: 673cd6c1acd37cfbbd19b648527fbb81d78867b489de32edc397aa29621506a1
162 Risk Score

Malware Insights

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

This PDF document contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=battlenet++so+slow', which is also flagged as a malicious redirector. The presence of numerous PDF links, many pointing to Shopify, suggests an attempt to obscure the malicious destination and potentially leverage SEO tactics. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=battlenet++so+slow In PDF document text
    • http://files.joshphotographer.com/uploads/1/3/1/3/131380107/xudevom_kaxifixu.pdfIn PDF document text
    • http://nenat.thetorrancecarpetcleaners.com/uploads/1/3/1/8/131855997/3031422.pdfIn PDF document text
    • http://mateviw.goodheartedgang.com/uploads/1/3/2/6/132695829/kekixu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6519/files/beware_of_pity_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/negodibuwuwasujetazituza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/binary_addition_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/mario_benedetti_biografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/21628764984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/transformers_g1_autobots_wiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/din_fastener_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/urticaria_multiforme_icd_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/53593560525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5004/files/88037045711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8442/2051/files/75981200441.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6304 4464 bytes
SHA-256: aa0ae380a03be0179c0e868a9df9aac8435cb6c04a3222e02bd793a416e1249f
font_01_sfnt_off00007240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7240 2016 bytes
SHA-256: 63f019dff5fa66ce254f8ec0f5ebdd5c99fc9b2aefd3036a46ce71f5faddaaf7
font_02_sfnt_off00007b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B98 10816 bytes
SHA-256: 170eb4af26acb561f154b8351c61b0124b3534d8d9ecb275949d1fd8f4ad218e
font_03_sfnt_off0000a083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA083 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd
font_04_sfnt_off0000b57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB57C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333