Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1593271af198911…

MALICIOUS

PDF

44.1 KB Created: 2020-08-08 00:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f871b491d9390f01edd3cf6de45e5f6e SHA-1: d077eb90bea1a1097de5c0fe3e93f64be70f1a52 SHA-256: d1593271af198911c939a58ddc7015e2a845d651fb8f9370392cfc969a9446fb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to known malicious redirector infrastructure at `ttraff.cc`. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=materialismo+dial%25C3%25A9tico+e+psican%25C3%25A1lise+pdf
    • http://files.tleconomicpolicyforum.org/uploads/1/3/0/7/130776611/mugafarelodikew.pdf
    • http://files.braxtonwinegarner.com/uploads/1/3/0/8/130813546/7486792.pdf
    • http://files.teamdoylegolfouting.com/uploads/1/3/1/1/131163561/jubajeteneginexuzore.pdf
    • http://files.christinarjackson.com/uploads/1/3/1/3/131379110/jaroropo-wedabipitofivif-bonefuso.pdf
    • http://files.changingfutures.org.uk/uploads/1/3/1/6/131606087/mufegesitawiko-matuwomap-xivekun-vokozufeletefuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/fuzozasomolit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/desasosenimejugivekaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/54909051063.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/27768223191.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/73877043236.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/global_trends_in_human_resource_management.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/lobirazopoxoxebiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/28142012212.pdf
    • https://cdn.shopify.com/s/files/1/0436/5765/8521/files/balanitis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/34619986449.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.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_off00006bdf.bin
3100d9ce51c9ace548be60fccad5f4c75c0272901a2afe663e6dab85168ddcad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 5680 bytes
font_01_sfnt_off00007e4b.bin
d72f3bb138cb03ed38e71cd145459afa660ca2a98fa60f6d2be4d52e6cc70e54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4B 11564 bytes

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