Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcec21d8517a475c…

MALICIOUS

PDF

34.4 KB Created: 2020-09-05 03:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8f420c2eff1f340ad2d305b2194d2a8 SHA-1: 1f87c4e5679d33d35090b66c29a9497a83764bfc SHA-256: fcec21d8517a475c41015d10dac3c37f9fcd8b4e8f35a9f7ecd16a67de875596
152 Risk Score

Malware Insights

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

The PDF file contains numerous links, including a critical redirector link to 'https://ttraff.link/wix?keyword=blank+facilitator+guide+template'. This indicates a phishing or social engineering attack, likely aiming to direct users to malicious content. The ML classifier strongly supports the malicious nature of this PDF. The document body, though partially corrupted, contains text suggesting it's a 'blank facilitator guide template', which is a common lure.

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.link/wix?keyword=blank+facilitator+guide+template
    • https://static.usrfiles.com/ugd/cc15ef_58faedb21f8343f4b3627562dfab4e74.pdf
    • https://static.usrfiles.com/ugd/b8c837_3654629aa2064e9a974cda5dc80845c2.pdf
    • https://static.usrfiles.com/ugd/f2c1dc_d1f489f9571e4d1b912f427e08feafa5.pdf
    • https://static.usrfiles.com/ugd/2f07a1_e2ad95a2a8264d28a571bfbfdce64ab3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dd4ad6a5c9541858a7f45dee7796066.pdf
    • https://static.usrfiles.com/ugd/b8c837_7158018ce86b44ffa626a76abc9a9b06.pdf
    • https://static.usrfiles.com/ugd/b8c837_55a5e38445084e7081cc85053a2655ac.pdf
    • https://static.usrfiles.com/ugd/1decf9_cccac2473678434fbb8327c665edfa28.pdf
    • https://static.usrfiles.com/ugd/035627_772973cca03c4b6e9918003febfb7d4a.pdf
    • https://static.usrfiles.com/ugd/cc1a03_10ae73c73aa14e8aaf6e8e133f20128a.pdf
    • https://static.usrfiles.com/ugd/957eb4_90d48cdbe29241ccb7ec054d485a988c.pdf
    • https://static.usrfiles.com/ugd/82e28d_781659363d50497d889ddffa87af619f.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_8482a751c56746bdbdee76663cfca0f6.pdf
    • https://cdn.shopify.com/s/files/1/0460/5755/4075/files/xokimitigexejatewin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0181/files/pixubapemulozereripax.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/zafidazexiwuboxanaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/wedding_day_timeline_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/stihl_ms_180_parts_list.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bb9.bin
11078f457ea46666bbaf91fefbd471aaa34708f6820bf381eea1e4232fc1c4f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB9 5412 bytes
font_01_sfnt_off00005e10.bin
6836cfdbc4ee5c9e57ae437680024d0f62ff74ebdbdbad063107ddbc8a159210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E10 8900 bytes

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