Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b642207afb3284…

MALICIOUS

PDF

48.7 KB Created: 2020-08-28 12:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d4b76195b12808b02766a49d7185e4a SHA-1: 75035446a63fa52f09691c9789031b70b5a5931e SHA-256: 15b642207afb3284582c633be092df75d5c587383cae4e7cfdac611369bb58e9
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identified a large external PDF link farm, suggesting a SEO-based spam or phishing operation. While no scripts were extracted, the presence of numerous links and the malicious redirector strongly indicate a phishing or scam attempt.

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=automate+programmable+industriel+pdf
    • http://files.ruthyleephotography.com/uploads/1/3/0/7/130775728/7e7506f85.pdf
    • http://files.packerintersections.com/uploads/1/3/0/7/130739754/gajujawikim-pozisalod-vefidu.pdf
    • http://files.shalomlife.org/uploads/1/3/1/0/131069812/lagesomaxitit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/android_tablet_deals_new.pdf
    • https://cdn.shopify.com/s/files/1/0440/5523/2677/files/amperemeter_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0434/5302/2369/files/hammer_and_sickle_text.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/foley_catheter_insertion_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0769/files/rafugegazitawixamivevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/vagazanavugibuwaforapofoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/wagifodixilodenulenatono.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/67771729795.pdf
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/cisco_meraki_z3_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/4277/2891/files/multiplying_fractions_worksheets_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/vitewuvugaris.pdf
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/98287098829.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/gumorefananugunaxu.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_off000072f6.bin
1d984d063c92c0c3ed752a7578b0a50a53f1c4416cdd517a88c9b08b57d94bcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F6 5372 bytes
font_01_sfnt_off00008514.bin
571c2c1e6220be7ca7f8bd22f077d7e3136350a37df0d3587f02f70347723887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8514 10076 bytes
font_02_sfnt_off0000a74d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA74D 4324 bytes

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