Malicious PDF — malware analysis report

Static analysis result for SHA-256 211f0a2a1c1679d3…

MALICIOUS

PDF

54.4 KB Created: 2020-07-25 18:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 8bd8f5ccc05b9ffaf18279d80aeba6bb SHA-1: ff002b59debaabad5fa9b0e7fba382a6ac38d41e SHA-256: 211f0a2a1c1679d3da2e839cc26e5228c030a9dfcda524df48df4e9e1f99988a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one pointing to a Shopify domain. The document body, though heavily obfuscated, appears to be related to a calibration manual, suggesting a lure to disguise the malicious intent.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=fluke%20754%20calibration%20manual In PDF document text
    • http://files.aurum-et-argentum.net/uploads/1/3/1/6/131636946/nimilufezavugo_vafude_rexesogufogovi.pdfIn PDF document text
    • http://files.encounterweightloss.com/uploads/1/3/0/7/130776828/8d2d30cd.pdfIn PDF document text
    • http://files.youvegotmaille.net/uploads/1/3/2/7/132740633/redevu_fijotiregu_fitomow.pdfIn PDF document text
    • http://files.bluenosewoodworks.com/uploads/1/3/2/8/132815961/somokirolurujewikusi.pdfIn PDF document text
    • http://files.clothdiaperdepotusa.com/uploads/1/3/0/9/130968934/tibapizazuja-goges-livasef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/xolomazisopewegageluga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/pimeteweramojikije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6294/2113/files/lotifejajepiluzibuzaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/gobakupuzifomiwop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/zimapipodogibilosuvuwuter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/fodenepise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/bokoweninuwidadefezeruzim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/wigibudija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/98923097995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/30824329851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0220/0223/files/20024361493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/fatinonefetebekomazeka.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC5 5100 bytes
SHA-256: 90cc34806db265ba619328b117fb733599372fe79665cc6c5039961824888213
font_01_sfnt_off0000a010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA010 14012 bytes
SHA-256: 6d8246693725346ab33e82ab475cfae6605cabe41767e1c5af00cca3d7d1c127

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