Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a388404ee3707ec…

MALICIOUS

PDF

42.2 KB Created: 2020-08-23 10:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 847623ad92b38eb6986b52d517d00d56 SHA-1: faded5b12434bebd57057dca06066cc0d885a49f SHA-256: 6a388404ee3707ec98c3615ad674983e1068a206bfe464868376c9f2996f5336
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'Asus battery health charging'. The presence of numerous embedded links, many pointing to potentially malicious domains, further supports the malicious intent. No scripts were extracted, but the redirection mechanism is clear.

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=asus+battery+health+charging++windows+10
    • http://nujuxofa.dhmtoday.com/uploads/1/3/1/4/131453197/525884.pdf
    • http://lujilud.villacortahomeopath.com/uploads/1/3/1/0/131070374/3815756.pdf
    • http://vevuju.lifteverystudent.com/uploads/1/3/2/8/132814930/fozufifotalog-baras-buguwepamul-bamuvulizoxixa.pdf
    • http://files.worxforms.com/uploads/1/3/2/7/132740764/kakerugonames_jukufamepenib_fedabudifib_lomudigesupoda.pdf
    • http://files.opensourcekids.org/uploads/1/3/0/7/130739376/vexiburanubedu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5956/0086/files/69929214031.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/management_accounting_for_business_decisions_drury.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/applied_mathematics_jhunjhunwala.pdf
    • https://cdn.shopify.com/s/files/1/0429/5350/6969/files/83398012241.pdf
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/runap.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/google_sheets_script.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/wuseseferipokifugog.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/phoneme_grapheme_mapping.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/deep_learning_algorithms_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/4977/1430/files/61477949177.pdf
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/analise_sintatica.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/munubojazovadobifezet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006413.bin
eee7885d81a036e662b25b596d2e2da29858ba19d7eed926f6bda05d1c180604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 5716 bytes
font_01_sfnt_off00007792.bin
eb9c64ae11810b1ea6416a2c8c9f5816089b7cf6a84ef1497a93719d54106efb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7792 10824 bytes

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