Malicious PDF — malware analysis report

Static analysis result for SHA-256 02da15f4b764429b…

MALICIOUS

PDF

48.4 KB Created: 2020-09-01 22:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07df1b408487dd796c575bc045d08f2f SHA-1: 6cf64a7a059d4606cac5e5e10e7d539aa353cc40 SHA-256: 02da15f4b764429b70e521cedacc8c0bceda49d235d810a733c46ff5ac6e595e
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The presence of a 'download button' lure further supports a phishing or scamming intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to redirect users to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=png+2018+cb+edits+background+hd
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/xusoxuvefox.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/87767914627.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/double_sided_tape_sheet_metal.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/filexuxeduwutumeduxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0913/0143/files/lokolitagozaviresabola.pdf
    • https://static.usrfiles.com/ugd/f103bb_1275b6227099403a9109bb42ed9ab381.pdf
    • https://static.usrfiles.com/ugd/a76634_d40225e5fd26426f815b6187e1251596.pdf
    • https://static.usrfiles.com/ugd/451461_45a70a26f003441fb3639a3158e3f9e8.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_0780cb98c8064d40a2f9746f9826555f.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/rijuguximawi.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/ctet_form_ke_liye_document.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c09.bin
b5061f939578fb4867f27195a88387e11af48e8ea4c2c000fc919c8f64e99ec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C09 3672 bytes
font_01_sfnt_off0000691c.bin
fa71ed38026185317511d07a310741ccdb335e9c688e06c38d19dd0ff06c3416		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691C 5776 bytes
font_02_sfnt_off00007cb0.bin
fa6ba6d0b5b2bd2e0791c3632900b485b4aeaa34a56ffc4e34b19e38b991bbdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 13368 bytes
font_03_sfnt_off0000a670.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA670 4324 bytes

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