Malicious PDF — malware analysis report

Static analysis result for SHA-256 1891c9d34ff59fa0…

MALICIOUS

PDF

48.7 KB Created: 2020-08-15 13:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd0f0c9777fb984fbbf529c0df6bce3d SHA-1: f009f8fb8504a69154b72ae59bb8d20d66d1b626 SHA-256: 1891c9d34ff59fa0a299a4d3a2e4ceb3bf14421b49e82e590fc9bf5c0ab29704
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, suggesting an attempt to lead the user to a malicious site. The document body, though heavily obfuscated, contains text related to a government scheme and the malicious URL, indicating a phishing or scam lure. The presence of embedded URLs and the ML classifier's high confidence further support the malicious classification.

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/wb?keyword=pradhan%20mantri%20sukanya%20yojana%20form%20pdf
    • http://wumizotex.rlcchouston.org/uploads/1/3/0/8/130814328/cd94ae06015.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/arterial_hypertension_classification.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/resovor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/antonio_vivaldi_winter_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0440/3917/6342/files/binary_logistic_regression_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/shirley_phelps-_roper.pdf
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/rocklahoma_2017_lineup_rumors.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/24307615714.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/49101987375.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/5e_order_domain.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/federici_caliban_and_the_witch.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/arduino_bluetooth_module_hc_06.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000704f.bin
79b823e0b1704a886c2ee1bac25e23fd54fef18b65aa576a7c3b67c6f13a158c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 5492 bytes
font_01_sfnt_off000082dc.bin
d83c1d5ced975dcd5dac830b7bb76922f15607226a27c78863e4e057f5c6d426		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82DC 10312 bytes
font_02_sfnt_off0000a656.bin
28bba0fae2bc13520cac5d5cc1ee8cec550c99685e2876ba14da0f661c061d59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA656 3836 bytes

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