Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d5c4b59024b2f1…

MALICIOUS

PDF

38.0 KB Created: 2020-08-19 16:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab67e2de1c98b30dbe12cf2ffb4fd761 SHA-1: 606250e65b0feb01611fd39a5818766ecdb38253 SHA-256: 74d5c4b59024b2f14d9e978cd99800d4ac690e1e53c542244cde433c95a493fa
154 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, https://ttraff.com/pify?keyword=arkham+horror+lcg+playmat+pdf, which is likely intended to lead the user to a malicious site. The document also exhibits characteristics of a PDF link farm, with numerous embedded links to other PDF files, suggesting a potential SEO poisoning or spamming campaign. No scripts were extracted, but the presence of a malicious redirector and the overall structure strongly indicate a phishing or malware distribution 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.com/pify?keyword=arkham+horror+lcg+playmat+pdf
    • http://files.4arrowsoutdoors.com/uploads/1/3/0/8/130814672/1910526.pdf
    • http://files.nespractitioners.com/uploads/1/3/0/7/130739907/8209662.pdf
    • http://files.fogdogfarm.com/uploads/1/3/2/7/132740633/dufononofux.pdf
    • http://files.veganslovegluten.com/uploads/1/3/1/4/131454126/9444061.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/visav.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/benami_property_transactions_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7246/files/que_es_la_administracion_publica_paraestatal.pdf
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/jopuxex.pdf
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/60936444061.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/dijowizi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/skip_counting_worksheets_free_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/beautiful_background_hd_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/south_africa_culture.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6801/files/89912035780.pdf
    • https://cdn.shopify.com/s/files/1/0437/9164/6880/files/64824553113.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/cfa_level_1_2020_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/29113340641.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_off00004aa0.bin
6a7ec6bf210c53c9b401d4abc88fea2a8037734db58b2d74e8b49b60cc495d27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA0 5060 bytes
font_01_sfnt_off00005bda.bin
68ab7f4b44d88a06a248773e4ee15802f5d5b20ddafd2541d700d5d28aff77a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDA 9712 bytes
font_02_sfnt_off00007cf5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF5 4324 bytes

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