Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed67004048342ef5…

MALICIOUS

PDF

52.3 KB Created: 2020-08-11 19:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e9c6fcd26b692b96eee288d3b1bce48 SHA-1: 2246f05e95ccfa136c07ba567be6a80fde3f2d80 SHA-256: ed67004048342ef5bcde3206acfe98786af55cf878d0c28c5ea300d4cfec90bb
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=mariage+d+amour+pdf+download, which is also listed as a malicious redirector. This suggests the PDF's primary purpose is to lure users into clicking malicious links, likely leading to phishing pages or malware downloads.

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/pify?keyword=mariage+d+amour+pdf+download
    • http://files.houstonpolopost.com/uploads/1/3/2/6/132696029/negidegakoratogok.pdf
    • http://files.foundationsoffuninfirst.com/uploads/1/3/0/8/130814118/93036.pdf
    • http://files.streetfightersunitedkingdom.com/uploads/1/3/1/4/131437878/3c353d051f22fd3.pdf
    • http://files.sokoloffglass.com/uploads/1/3/1/4/131438203/lapuralesumise.pdf
    • http://lutuv.andrewandmeghan.com/uploads/1/3/0/7/130739017/c18a9.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/journeymap_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/zokedekubusofes.pdf
    • https://cdn.shopify.com/s/files/1/0437/8886/1602/files/ap_calculus_limits_practice.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/4363505762.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/great_britain_vs_uk.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/rudew.pdf
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/regevozuxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/sepugizafuxeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/kekukipef.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/tezilixufiriv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/pojijuduwewowo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000095ce.bin
4c587fe1ac487d5e119e30ff22f3c78d1302379809d95d38f53a0a3977b6b381		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x95CE 25284 bytes
font_00_sfnt_off00004da8.bin
ffb551b4bd28c76a6062b542aae19e0df5912490321905e387f9a9a36a0b860e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DA8 2872 bytes
font_01_sfnt_off000057cd.bin
145b4de7b459afb90963c6d9346ad9cd28476b87051ccb10c6624254864924cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CD 5280 bytes
font_02_sfnt_off000069c6.bin
4c73b9f98783d3522fe1cc4f59a1544d8889d9b92aeae40df2c5f9ba43949745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 14184 bytes

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