Malicious PDF — malware analysis report

Static analysis result for SHA-256 352acfde685f7726…

MALICIOUS

PDF

45.3 KB Created: 2020-08-14 04:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd0e96aefe7805a7c7848382c3490ec9 SHA-1: 475383dc07a3d6c770d81bd6a727a5072cf25b62 SHA-256: 352acfde685f7726dc050b2c7063c7af4c02477cd27ea2da07c9a8f88781c5a6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=localizar+mi+celular+android+gratis`. This URL is presented within the document body, disguised as a tool to locate an Android phone, indicating a phishing or social engineering lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm used to distribute malicious content or improve SEO for malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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=localizar+mi+celular+android+gratis
    • http://files.craftedtokeep.com/uploads/1/3/0/7/130775102/manapudir-komoxoza-zovuvozadegozis-xesot.pdf
    • http://files.fixthepilotshortage.com/uploads/1/3/2/6/132681767/kurino.pdf
    • http://damuzal.changlaoshiclassroom.com/uploads/1/3/2/6/132680813/rikipirop.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/aerobic_and_anaerobic_process_in_wastewater_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/calf_stretches_nhs.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/jenovuxeka.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/67576061598.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/geometric_figures.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/dasuzebazowufukulozikemeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/zepipugadedamuzol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/quad_laser_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/jutigati.pdf
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/dexemajin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000655b.bin
2dbc5e670ddd120d8ade31bf49ed2d9ab290ff5ee930ebd837c099a05acba991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x655B 5132 bytes
font_01_sfnt_off000076b2.bin
e558561a3d646a69cc7f667d78b88e694a181dfed5ef36e766e2b445c8d9485c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 10432 bytes
font_02_sfnt_off000098ae.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98AE 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.