Malicious PDF — malware analysis report

Static analysis result for SHA-256 2591063b04930431…

MALICIOUS

PDF

38.2 KB Created: 2020-08-07 14:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad095c0f8713ac5f547da841242dbbfa SHA-1: f0220fdff612802c35127b71a30ea637fbb9024f SHA-256: 2591063b049304313b60670c16fad38c7ddfcf0fbd6a38166cf3583adbad3ee6
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with the primary redirector URL being ttraff.ru. This heuristic firing indicates the document is designed to redirect users to malicious infrastructure. The document body also contains the same lure text and URLs, reinforcing the malicious intent. No scripts were extracted, but the PDF structure and link farm suggest a delivery mechanism for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=microsoft+azure+certification+books+pdf
    • http://files.aubreyloganterry.net/uploads/1/3/1/0/131070051/6463595.pdf
    • http://files.whittaylorcomics.com/uploads/1/3/2/7/132740595/kevotamefakulus.pdf
    • http://files.shaymacmorran.com/uploads/1/3/1/3/131379343/gibiditi.pdf
    • http://files.anjaeden.com/uploads/1/3/2/6/132695629/fanuxawugatam_gifuzuwerajex_mugap.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/kesawesemeragovixigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/sewabim.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/brazilian_portuguese_to_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/verarejofawifinixopubape.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/59378556816.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5137558887.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/wivimobole.pdf
    • https://cdn.shopify.com/s/files/1/0431/3268/2397/files/87551739545.pdf
    • https://cdn.shopify.com/s/files/1/0440/4664/7446/files/w3schools_ajax_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/tuwemirupizopadibi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/best_bodybuilding_workout_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/tabosax.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/98222156238.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_off000056d6.bin
2fe96f38bc5223b1f31e2c1ce3411b8252f4c10cf1db0a791e420b692a03e87b
pdf-font-stream PDF embedded font (sfnt) at offset 0x56D6 5376 bytes
font_01_sfnt_off0000693f.bin
fb67f7ae4c0ffa26260d366e7828f0f4a3e3d29a5c6e2de4b84714882da8810e
pdf-font-stream PDF embedded font (sfnt) at offset 0x693F 10076 bytes