Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceedcc0e316707d8…

MALICIOUS

PDF

46.9 KB Created: 2020-08-08 16:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c33becce34498d95f8521ba2afaf370 SHA-1: 6c307de672cddc06bfb152806537f52018144e5c SHA-256: ceedcc0e316707d8a21620ca16c07a33d5efb368c5930e336001a9b2c8512f18
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=alexander+lowen+bioenergetics+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and a benign-looking PDF title, suggesting a lure.

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.ru/pify?keyword=alexander+lowen+bioenergetics+pdf
    • http://files.ucfibroids.com/uploads/1/3/0/7/130738568/funujulivi_popefulimexe_tolagu_geped.pdf
    • http://files.handhtacklellc.com/uploads/1/3/2/3/132302863/wevowawaronoju-zosazoge-wozubuzojofo.pdf
    • http://files.sanctuaryaplaceofrefuge.org/uploads/1/3/1/4/131437464/rakuli.pdf
    • http://files.mealsformedicine.com/uploads/1/3/0/8/130874026/9018e98aba1.pdf
    • http://files.handhtacklellc.com/uploads/1/3/2/3/132302863/wevowawaronoju-zosazoge-woz
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/33243834269.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/20853300145.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/bexufagora.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/ariens_lawn_mower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1719/files/python_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/dimefasusepisutenunegazer.pdf
    • https://cdn.shopify.com/s/files/1/0445/3092/5727/files/pdf_novel_ceros_dan_batozar_tere_liye.pdf
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/80057643515.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/xobevek.pdf
    • https://cdn.shopify.com/s/files/1/0439/9867/5102/files/deloitte_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/bernoulli_distribution_examples_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.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_off000077a1.bin
1cd76748a0ed57a1a4c1e0ab3b80ffbf0d3712d9531539a82ab1019aea469290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 5612 bytes
font_01_sfnt_off00008ae4.bin
9b5270f8cce9377ef065ece42c76f9e4d9bd1c31c1015d0d9e6efeb36f66fbc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 10688 bytes

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