Malicious PDF — malware analysis report

Static analysis result for SHA-256 b319e082ceeb65d5…

MALICIOUS

PDF

54.7 KB Created: 2020-09-09 05:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7db52dfdaa85e6b44091a3052165624 SHA-1: 3b73bf2aa59fb13ed868214c75c3a1c47e7be62b SHA-256: b319e082ceeb65d52bf27c8a1be95c8f40bf6f031d85774ee0fa853377f35fd8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=assassin%2527+s+creed+origins+xbox+one++code'. This URL is presented within the document body, suggesting a lure to a malicious site disguised as content related to 'Assassin's Creed Origins'. The presence of a PDF link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, resources.

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.me/wix?keyword=assassin%2527+s+creed+origins+xbox+one++code
    • https://cdn.shopify.com/s/files/1/0437/0723/6503/files/address_in_usa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdf
    • https://cdn.shopify.com/s/files/1/0434/1245/5591/files/inform_against_crossword_puzzle_clue.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/vosuboragawowusofonataz.pdf
    • https://static.usrfiles.com/ugd/217d68_f1aab7e9bda048f39d522cf26c38e6b3.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1288/files/kenneth_goldsmith_wasting_time_on_the_internet.pdf
    • https://cdn.shopify.com/s/files/1/0445/5497/7444/files/berelotujuzefozinifot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2305/files/66770397541.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2247/files/24499346564.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8912/files/36451934178.pdf
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/bachelor_party_movie_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/ps2_emulators_for_android.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_off000098ba.bin
be749348a53fb0852843fcf14005e328b22786da52e217cada1f300ed3d44914
pdf-font-stream PDF embedded font (sfnt) at offset 0x98BA 5304 bytes
font_01_sfnt_off0000aadc.bin
504344f2223299930a66aba5e4408d2f411172dbb1a7a99f9d326de7c7011494
pdf-font-stream PDF embedded font (sfnt) at offset 0xAADC 10192 bytes