Malicious PDF — malware analysis report

Static analysis result for SHA-256 edaa4e9c2f5ffb4e…

MALICIOUS

PDF

43.9 KB Created: 2020-08-11 23:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fab605554a85066d2b5552523541aa49 SHA-1: c3c93b44d6833fe658508e5522dee29b6c7997db SHA-256: edaa4e9c2f5ffb4e8a09b1e8a71b2a46228279d6ec9a3a4abc0c25e7752712d0
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=www.+converter+pdf+to+word+online'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of numerous other links, many pointing to Shopify domains with seemingly random filenames, indicates a link farm strategy to improve search engine ranking and lure unsuspecting users. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection 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=www.+converter+pdf+to+word+online
    • http://files.theleantrainer.co.uk/uploads/1/3/1/3/131383319/tizojijowad-jiril.pdf
    • http://virizuro.1stcolonyliquor.com/uploads/1/3/1/3/131398101/226a2365.pdf
    • http://files.birchtreegardens.com/uploads/1/3/1/8/131871633/a6adf211d.pdf
    • http://bamolodow.acresofopportunityranch.com/uploads/1/3/1/4/131437462/romelovi_jojotuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/4543/5030/files/the_story_of_god_bible_commentary.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/wuxovuwemebuwabufof.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/d_d_inheritor_background.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/5052750245.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/dowiruxotarilatenivixoxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2686/6599/files/bebiwizevix.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/44872702127.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/todilaxutixipotuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/binoluso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/xiborul.pdf
    • https://cdn.shopify.com/s/files/1/0435/8379/9459/files/mathematical_physics_satya_prakash_download.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_off00006ddf.bin
1e053e339fe5fbfca7a121d249279478eca95ce46051227b27edb19f25d1afa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDF 4956 bytes
font_01_sfnt_off00007ee7.bin
d694b0392f84a9377e194df6fc9b3b5b66d06b7ada93ba2c4aa66da2c9429800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE7 10316 bytes

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