Malicious PDF — malware analysis report

Static analysis result for SHA-256 881d687ea68ec37b…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 16:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce4a39560587ccb304423a7623256ae8 SHA-1: 13ad95f8b02818c4b2732f9b6924fcbbfde9dc1b SHA-256: 881d687ea68ec37b95c6ccf29bd219b0846ca0031d0b3821ab8a92573cc33286
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic identifying it as a malicious redirector link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=adirondack+high+peaks+map+pdf', is likely used to redirect users to further malicious content. The document body itself is heavily obfuscated and contains what appears to be junk data, but also includes the malicious URL and numerous benign-looking Shopify links, suggesting a tactic to disguise malicious activity within a large volume of links.

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.com/pify?keyword=adirondack+high+peaks+map+pdf
    • http://nemamus.schoolstaffsafeguardingquiz.co.uk/uploads/1/3/0/8/130814017/8134081.pdf
    • http://files.heartoftexasarmory.com/uploads/1/3/1/8/131871466/wegituredifom-zaridokapiwewa-niledidabiz-pujusotes.pdf
    • http://files.dolcevitaspomeranians.com/uploads/1/3/2/7/132710787/a14de.pdf
    • http://filase.liberalsforliberty.org/uploads/1/3/1/4/131452988/56933bcbd7e3.pdf
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/8/131856039/9b99c4fbd259d.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/24825382788.pdf
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/the_walking_dead_season_6_123movies.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/algebra_of_sets.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/buddhism_in_nepal.pdf
    • https://cdn.shopify.com/s/files/1/0434/7563/2285/files/16755701829.pdf
    • https://cdn.shopify.com/s/files/1/0433/5307/9963/files/88563835022.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7185/files/kowotenagibowifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/26806102785.pdf
    • https://cdn.shopify.com/s/files/1/0433/2093/4558/files/vakiwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/xuxizodozebugugivap.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/88953264803.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/kindle_daily_deals.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_off00006928.bin
790d2490f43b7b59f7d714f186437c154f3edfb033ea5c54d21d470c2a295c86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6928 5588 bytes
font_01_sfnt_off00007c00.bin
cd05c52f968df07b296ad042fca79620353606107f1524b16727ada8d0807c05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C00 10292 bytes

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